57644520836 has 48 divisors (see below), whose sum is σ = 118006390656. Its totient is φ = 24122859264.

The previous prime is 57644520809. The next prime is 57644520859. The reversal of 57644520836 is 63802544675.

It is a happy number.

57644520836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5867000 + ... + 5876816.

It is an arithmetic number, because the mean of its divisors is an integer number (2458466472).

Almost surely, 2^57644520836 is an apocalyptic number.

It is an amenable number.

57644520836 is an abundant number, since it is smaller than the sum of its proper divisors (60361869820).

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

57644520836 is a wasteful number, since it uses less digits than its factorization.

57644520836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14748 (or 14746 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 57644520836 in words is "fifty-seven billion, six hundred forty-four million, five hundred twenty thousand, eight hundred thirty-six".