57215780236 has 12 divisors (see below), whose sum is σ = 101099728912. Its totient is φ = 28330143408.

The previous prime is 57215780221. The next prime is 57215780239. The reversal of 57215780236 is 63208751275.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (57215780239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69436215 + ... + 69437038.

Almost surely, 2^57215780236 is an apocalyptic number.

It is an amenable number.

57215780236 is a deficient number, since it is larger than the sum of its proper divisors (43883948676).

57215780236 is a wasteful number, since it uses less digits than its factorization.

57215780236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138873360 (or 138873358 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 57215780236 in words is "fifty-seven billion, two hundred fifteen million, seven hundred eighty thousand, two hundred thirty-six".