56668446720 has 224 divisors, whose sum is σ = 201479444640. Its totient is φ = 15111290880.

The previous prime is 56668446719. The next prime is 56668446733. The reversal of 56668446720 is 2764486665.

It is a super-2 number, since 2×56668446720² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080300 + ... + 1131540.

Almost surely, 2^56668446720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56668446720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100739722320).

56668446720 is an abundant number, since it is smaller than the sum of its proper divisors (144810997920).

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

56668446720 is an equidigital number, since it uses as much as digits as its factorization.

56668446720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51281 (or 51251 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 56668446720 in words is "fifty-six billion, six hundred sixty-eight million, four hundred forty-six thousand, seven hundred twenty".