57256700260560 has 80 divisors (see below), whose sum is σ = 177511516035840. Its totient is φ = 15267098974720.

The previous prime is 57256700260537. The next prime is 57256700260567. The reversal of 57256700260560 is 6506200765275.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×57256700260560² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57256700260567) 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, 7868871 + ... + 13282790.

It is an arithmetic number, because the mean of its divisors is an integer number (2218893950448).

Almost surely, 2^{57256700260560} is an apocalyptic number.

It is an amenable number.

57256700260560 is an abundant number, since it is smaller than the sum of its proper divisors (120254815775280).

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

57256700260560 is a wasteful number, since it uses less digits than its factorization.

57256700260560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21162956 (or 21162950 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 57256700260560 in words is "fifty-seven trillion, two hundred fifty-six billion, seven hundred million, two hundred sixty thousand, five hundred sixty".