57634081638 has 32 divisors (see below), whose sum is σ = 131767637760. Its totient is φ = 16462806240.

The previous prime is 57634081627. The next prime is 57634081663. The reversal of 57634081638 is 83618043675.

57634081638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4108 + ... + 339536.

It is an arithmetic number, because the mean of its divisors is an integer number (4117738680).

Almost surely, 2^57634081638 is an apocalyptic number.

57634081638 is an abundant number, since it is smaller than the sum of its proper divisors (74133556122).

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

57634081638 is a wasteful number, since it uses less digits than its factorization.

57634081638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339532.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 57634081638 in words is "fifty-seven billion, six hundred thirty-four million, eighty-one thousand, six hundred thirty-eight".