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57438671592 = 23329641128747
BaseRepresentation
bin110101011111100111…
…001001001011101000
312111020222222211201010
4311133213021023220
51420113244442332
642215330023520
74102245436641
oct653747111350
9174228884633
1057438671592
11223a56a6125
12b170117ba0
135554c07253
142acc63a6c8
1517629609cc
hexd5f9c92e8

57438671592 has 64 divisors (see below), whose sum is σ = 148781188800. Its totient is φ = 18457026560.

The previous prime is 57438671557. The next prime is 57438671593. The reversal of 57438671592 is 29517683475.

It is not an unprimeable number, because it can be changed into a prime (57438671593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381763 + ... + 510509.

It is an arithmetic number, because the mean of its divisors is an integer number (2324706075).

Almost surely, 257438671592 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 57438671592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74390594400).

57438671592 is an abundant number, since it is smaller than the sum of its proper divisors (91342517208).

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

57438671592 is a wasteful number, since it uses less digits than its factorization.

57438671592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129426 (or 129422 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 57.

The spelling of 57438671592 in words is "fifty-seven billion, four hundred thirty-eight million, six hundred seventy-one thousand, five hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 24 29 58 87 116 174 232 348 641 696 1282 1923 2564 3846 5128 7692 15384 18589 37178 55767 74356 111534 128747 148712 223068 257494 386241 446136 514988 772482 1029976 1544964 3089928 3733663 7467326 11200989 14934652 22401978 29869304 44803956 82526827 89607912 165053654 247580481 330107308 495160962 660214616 990321924 1980643848 2393277983 4786555966 7179833949 9573111932 14359667898 19146223864 28719335796 57438671592