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57488756639 = 1720111681597
BaseRepresentation
bin110101100010100110…
…001100111110011111
312111101111020102110212
4311202212030332133
51420214110203024
642224315323035
74103424240326
oct654246147637
9174344212425
1057488756639
11224209a4826
12b184a5047b
1355623c2282
142ad51570bd
151767055a0e
hexd6298cf9f

57488756639 has 8 divisors (see below), whose sum is σ = 60900753168. Its totient is φ = 54080127360.

The previous prime is 57488756609. The next prime is 57488756653. The reversal of 57488756639 is 93665788475.

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

It is a cyclic number.

It is not a de Polignac number, because 57488756639 - 216 = 57488691103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57488756609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 806612 + ... + 874985.

It is an arithmetic number, because the mean of its divisors is an integer number (7612594146).

Almost surely, 257488756639 is an apocalyptic number.

57488756639 is a deficient number, since it is larger than the sum of its proper divisors (3411996529).

57488756639 is a wasteful number, since it uses less digits than its factorization.

57488756639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683625.

The product of its digits is 304819200, while the sum is 68.

The spelling of 57488756639 in words is "fifty-seven billion, four hundred eighty-eight million, seven hundred fifty-six thousand, six hundred thirty-nine".

Divisors: 1 17 2011 34187 1681597 28587149 3381691567 57488756639