57216624655 has 8 divisors (see below), whose sum is σ = 68661491184. Its totient is φ = 45772272000.

The previous prime is 57216624623. The next prime is 57216624677. The reversal of 57216624655 is 55642661275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57216624655 - 2⁵ = 57216624623 is a prime.

It is a super-2 number, since 2×57216624655² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57216624599 and 57216624608.

It is a congruent number.

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, 186855 + ... + 386455.

It is an arithmetic number, because the mean of its divisors is an integer number (8582686398).

Almost surely, 2^57216624655 is an apocalyptic number.

57216624655 is a deficient number, since it is larger than the sum of its proper divisors (11444866529).

57216624655 is a wasteful number, since it uses less digits than its factorization.

57216624655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256937.

The product of its digits is 3024000, while the sum is 49.

The spelling of 57216624655 in words is "fifty-seven billion, two hundred sixteen million, six hundred twenty-four thousand, six hundred fifty-five".