57218584236 has 96 divisors (see below), whose sum is σ = 153485369856. Its totient is φ = 16420800000.

The previous prime is 57218584187. The next prime is 57218584253. The reversal of 57218584236 is 63248581275.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213336 + ... + 399936.

It is an arithmetic number, because the mean of its divisors is an integer number (1598805936).

Almost surely, 2^57218584236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57218584236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76742684928).

57218584236 is an abundant number, since it is smaller than the sum of its proper divisors (96266785620).

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

57218584236 is a wasteful number, since it uses less digits than its factorization.

57218584236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186743 (or 186741 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The spelling of 57218584236 in words is "fifty-seven billion, two hundred eighteen million, five hundred eighty-four thousand, two hundred thirty-six".