56221094678544 has 100 divisors (see below), whose sum is σ = 162739591995024. Its totient is φ = 18738126816192.

The previous prime is 56221094678509. The next prime is 56221094678557. The reversal of 56221094678544 is 44587649012265.

56221094678544 is a `hidden beast` number, since 5 + 6 + 2 + 2 + 10 + 9 + 4 + 6 + 78 + 544 = 666.

It is a super-2 number, since 2×56221094678544² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8283379 + ... + 13455725.

Almost surely, 2^{56221094678544} is an apocalyptic number.

56221094678544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

56221094678544 is an abundant number, since it is smaller than the sum of its proper divisors (106518497316480).

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

56221094678544 is a wasteful number, since it uses less digits than its factorization.

56221094678544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180754 (or 5180739 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 63.

The spelling of 56221094678544 in words is "fifty-six trillion, two hundred twenty-one billion, ninety-four million, six hundred seventy-eight thousand, five hundred forty-four".