56620822100 has 72 divisors (see below), whose sum is σ = 125004400248. Its totient is φ = 22256640000.

The previous prime is 56620822051. The next prime is 56620822117. The reversal of 56620822100 is 122802665.

It can be written as a sum of positive squares in 12 ways, for example, as 17201896336 + 39418925764 = 131156^2 + 198542^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2008100 + ... + 2036100.

Almost surely, 2^56620822100 is an apocalyptic number.

56620822100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56620822100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62502200124).

56620822100 is an abundant number, since it is smaller than the sum of its proper divisors (68383578148).

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

56620822100 is a wasteful number, since it uses less digits than its factorization.

56620822100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365 (or 28358 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 56620822100 in words is "fifty-six billion, six hundred twenty million, eight hundred twenty-two thousand, one hundred".