56661760512 has 480 divisors, whose sum is σ = 199288387584. Its totient is φ = 15128985600.

The previous prime is 56661760511. The next prime is 56661760559. The reversal of 56661760512 is 21506716665.

It is not an unprimeable number, because it can be changed into a prime (56661760511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104734962 + ... + 104735502.

Almost surely, 2^56661760512 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 56661760512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99644193792).

56661760512 is an abundant number, since it is smaller than the sum of its proper divisors (142626627072).

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

56661760512 is a wasteful number, since it uses less digits than its factorization.

56661760512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 56661760512 in words is "fifty-six billion, six hundred sixty-one million, seven hundred sixty thousand, five hundred twelve".