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57405688120 = 235117915110937
BaseRepresentation
bin110101011101101001…
…010100100100111000
312111011200221002220001
4311131221110210320
51420031324004440
642212151042344
74101365204134
oct653551244470
9174150832801
1057405688120
1122389018160
12b1610703b4
13554b1292c1
142ac80d23c4
15175eae7b9a
hexd5da54938

57405688120 has 128 divisors (see below), whose sum is σ = 143646566400. Its totient is φ = 20472192000.

The previous prime is 57405688099. The next prime is 57405688127. The reversal of 57405688120 is 2188650475.

57405688120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57405688127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5243292 + ... + 5254228.

It is an arithmetic number, because the mean of its divisors is an integer number (1122238800).

Almost surely, 257405688120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57405688120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71823283200).

57405688120 is an abundant number, since it is smaller than the sum of its proper divisors (86240878280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57405688120 is a wasteful number, since it uses less digits than its factorization.

57405688120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11189 (or 11185 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 57405688120 in words is "fifty-seven billion, four hundred five million, six hundred eighty-eight thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 79 88 110 151 158 220 302 316 395 440 604 632 755 790 869 1208 1510 1580 1661 1738 3020 3160 3322 3476 4345 6040 6644 6952 8305 8690 10937 11929 13288 16610 17380 21874 23858 33220 34760 43748 47716 54685 59645 66440 87496 95432 109370 119290 120307 131219 218740 238580 240614 262438 437480 477160 481228 524876 601535 656095 864023 962456 1049752 1203070 1312190 1651487 1728046 2406140 2624380 3302974 3456092 4320115 4812280 5248760 6605948 6912184 8257435 8640230 9504253 13211896 16514870 17280460 18166357 19008506 33029740 34560920 36332714 38017012 47521265 66059480 72665428 76034024 90831785 95042530 130467473 145330856 181663570 190085060 260934946 363327140 380170120 521869892 652337365 726654280 1043739784 1304674730 1435142203 2609349460 2870284406 5218698920 5740568812 7175711015 11481137624 14351422030 28702844060 57405688120