56520779648 has 96 divisors (see below), whose sum is σ = 122398284360. Its totient is φ = 25978724352.

The previous prime is 56520779621. The next prime is 56520779677. The reversal of 56520779648 is 84697702565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1572890 + ... + 1608422.

Almost surely, 2^56520779648 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 56520779648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61199142180).

56520779648 is an abundant number, since it is smaller than the sum of its proper divisors (65877504712).

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

56520779648 is a wasteful number, since it uses less digits than its factorization.

56520779648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35624 (or 35595 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 56520779648 in words is "fifty-six billion, five hundred twenty million, seven hundred seventy-nine thousand, six hundred forty-eight".