56621445210 has 192 divisors, whose sum is σ = 165252057984. Its totient is φ = 13330137600.

The previous prime is 56621445203. The next prime is 56621445229. The reversal of 56621445210 is 1254412665.

56621445210 is a `hidden beast` number, since 5 + 6 + 621 + 4 + 4 + 5 + 21 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25310212 + ... + 25312448.

It is an arithmetic number, because the mean of its divisors is an integer number (860687802).

Almost surely, 2^56621445210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56621445210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82626028992).

56621445210 is an abundant number, since it is smaller than the sum of its proper divisors (108630612774).

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

56621445210 is a wasteful number, since it uses less digits than its factorization.

56621445210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 56621445210 its reverse (1254412665), we get a palindrome (57875857875).

The spelling of 56621445210 in words is "fifty-six billion, six hundred twenty-one million, four hundred forty-five thousand, two hundred ten".