57551655780 has 72 divisors (see below), whose sum is σ = 174719368824. Its totient is φ = 15334272000.

The previous prime is 57551655767. The next prime is 57551655781. The reversal of 57551655780 is 8755615575.

57551655780 is a `hidden beast` number, since 5 + 7 + 5 + 5 + 1 + 6 + 557 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3657104676 + 53894551104 = 60474^2 + 232152^2 .

It is not an unprimeable number, because it can be changed into a prime (57551655781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83070 + ... + 349290.

Almost surely, 2^57551655780 is an apocalyptic number.

It is an amenable number.

57551655780 is an abundant number, since it is smaller than the sum of its proper divisors (117167713044).

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

57551655780 is a wasteful number, since it uses less digits than its factorization.

57551655780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267437 (or 267432 counting only the distinct ones).

The product of its (nonzero) digits is 7350000, while the sum is 54.

The spelling of 57551655780 in words is "fifty-seven billion, five hundred fifty-one million, six hundred fifty-five thousand, seven hundred eighty".