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57680680731 = 332095991553
BaseRepresentation
bin110101101110000010…
…010101011100011011
312111212212101011211120
4311232002111130123
51421112223240411
642255333100323
74111244460642
oct655602253433
9174785334746
1057680680731
112250a271183
12b2191876a3
1355930ac71b
142b12836359
151778d17106
hexd6e09571b

57680680731 has 8 divisors (see below), whose sum is σ = 76931553360. Its totient is φ = 38441797632.

The previous prime is 57680680633. The next prime is 57680680777. The reversal of 57680680731 is 13708608675.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-57680680731 is a prime.

It is a super-2 number, since 2×576806807312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57680681731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2986150 + ... + 3005403.

It is an arithmetic number, because the mean of its divisors is an integer number (9616444170).

Almost surely, 257680680731 is an apocalyptic number.

57680680731 is a deficient number, since it is larger than the sum of its proper divisors (19250872629).

57680680731 is a wasteful number, since it uses less digits than its factorization.

57680680731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994765.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 57680680731 in words is "fifty-seven billion, six hundred eighty million, six hundred eighty thousand, seven hundred thirty-one".

Divisors: 1 3 3209 9627 5991553 17974659 19226893577 57680680731