56620681584 has 120 divisors (see below), whose sum is σ = 151948667520. Its totient is φ = 18167337216.

The previous prime is 56620681573. The next prime is 56620681589. The reversal of 56620681584 is 48518602665.

56620681584 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56620681589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14490159 + ... + 14494065.

It is an arithmetic number, because the mean of its divisors is an integer number (1266238896).

Almost surely, 2^56620681584 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 56620681584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75974333760).

56620681584 is an abundant number, since it is smaller than the sum of its proper divisors (95327985936).

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

56620681584 is a wasteful number, since it uses less digits than its factorization.

56620681584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4300 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 56620681584 in words is "fifty-six billion, six hundred twenty million, six hundred eighty-one thousand, five hundred eighty-four".