57216645810 has 64 divisors (see below), whose sum is σ = 156126072960. Its totient is φ = 14902937280.

The previous prime is 57216645803. The next prime is 57216645817. The reversal of 57216645810 is 1854661275.

57216645810 is a `hidden beast` number, since 5 + 7 + 2 + 1 + 6 + 64 + 581 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (57216645803) and next prime (57216645817).

It is a super-2 number, since 2×57216645810² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (57216645817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2452501 + ... + 2475720.

It is an arithmetic number, because the mean of its divisors is an integer number (2439469890).

Almost surely, 2^57216645810 is an apocalyptic number.

57216645810 is an abundant number, since it is smaller than the sum of its proper divisors (98909427150).

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

57216645810 is a wasteful number, since it uses less digits than its factorization.

57216645810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928280 (or 4928274 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 57216645810 in words is "fifty-seven billion, two hundred sixteen million, six hundred forty-five thousand, eight hundred ten".