57155541768 has 72 divisors (see below), whose sum is σ = 167619653370. Its totient is φ = 17586316800.

The previous prime is 57155541749. The next prime is 57155541769. The reversal of 57155541768 is 86714555175.

57155541768 is a `hidden beast` number, since 5 + 7 + 15 + 554 + 1 + 76 + 8 = 666.

57155541768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 30240514404 + 26915027364 = 173898^2 + 164058^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (57155541769) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2336433 + ... + 2360768.

Almost surely, 2^57155541768 is an apocalyptic number.

It is an amenable number.

57155541768 is an abundant number, since it is smaller than the sum of its proper divisors (110464111602).

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

57155541768 is a wasteful number, since it uses less digits than its factorization.

57155541768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697239 (or 4697219 counting only the distinct ones).

The product of its digits is 5880000, while the sum is 54.

The spelling of 57155541768 in words is "fifty-seven billion, one hundred fifty-five million, five hundred forty-one thousand, seven hundred sixty-eight".