57072372642 has 24 divisors (see below), whose sum is σ = 124486724700. Its totient is φ = 18896444640.

The previous prime is 57072372611. The next prime is 57072372703. The reversal of 57072372642 is 24627327075.

57072372642 is a `hidden beast` number, since 570 + 7 + 2 + 3 + 72 + 6 + 4 + 2 = 666.

57072372642 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 2 ways, for example, as 56734952481 + 337420161 = 238191^2 + 18369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10637209 + ... + 10642572.

Almost surely, 2^57072372642 is an apocalyptic number.

57072372642 is an abundant number, since it is smaller than the sum of its proper divisors (67414352058).

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

57072372642 is a wasteful number, since it uses less digits than its factorization.

57072372642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21279938 (or 21279935 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 45.

The spelling of 57072372642 in words is "fifty-seven billion, seventy-two million, three hundred seventy-two thousand, six hundred forty-two".