56536724480 has 66 divisors (see below), whose sum is σ = 135662710146. Its totient is φ = 22607884288.

The previous prime is 56536724479. The next prime is 56536724513. The reversal of 56536724480 is 8442763565.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45229379584 + 11307344896 = 212672^2 + 106336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17012099 + ... + 17015421.

Almost surely, 2^56536724480 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 56536724480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67831355073).

56536724480 is an abundant number, since it is smaller than the sum of its proper divisors (79125985666).

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

56536724480 is an frugal number, since it uses more digits than its factorization.

56536724480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671 (or 3330 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 56536724480 in words is "fifty-six billion, five hundred thirty-six million, seven hundred twenty-four thousand, four hundred eighty".