56221938580020 has 96 divisors (see below), whose sum is σ = 157812655625856. Its totient is φ = 14955277708800.

The previous prime is 56221938580013. The next prime is 56221938580037. The reversal of 56221938580020 is 2008583912265.

It is a congruent number.

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, 87833530 + ... + 88471310.

It is an arithmetic number, because the mean of its divisors is an integer number (1643881829436).

Almost surely, 2^{56221938580020} is an apocalyptic number.

It is an amenable number.

56221938580020 is an abundant number, since it is smaller than the sum of its proper divisors (101590717045836).

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

56221938580020 is a wasteful number, since it uses less digits than its factorization.

56221938580020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641441 (or 641439 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 56221938580020 in words is "fifty-six trillion, two hundred twenty-one billion, nine hundred thirty-eight million, five hundred eighty thousand, twenty".