57212578344 has 32 divisors (see below), whose sum is σ = 143116031520. Its totient is φ = 19059581376.

The previous prime is 57212578321. The next prime is 57212578391. The reversal of 57212578344 is 44387521275.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 57212578293 and 57212578302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663402 + ... + 744665.

It is an arithmetic number, because the mean of its divisors is an integer number (4472375985).

Almost surely, 2^57212578344 is an apocalyptic number.

It is an amenable number.

57212578344 is an abundant number, since it is smaller than the sum of its proper divisors (85903453176).

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

57212578344 is a wasteful number, since it uses less digits than its factorization.

57212578344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409769 (or 1409765 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 48.

The spelling of 57212578344 in words is "fifty-seven billion, two hundred twelve million, five hundred seventy-eight thousand, three hundred forty-four".