56405420792 has 64 divisors (see below), whose sum is σ = 123933680640. Its totient is φ = 23564880000.

The previous prime is 56405420767. The next prime is 56405420809. The reversal of 56405420792 is 29702450465.

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, 617942 + ... + 703322.

It is an arithmetic number, because the mean of its divisors is an integer number (1936463760).

Almost surely, 2^56405420792 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 56405420792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61966840320).

56405420792 is an abundant number, since it is smaller than the sum of its proper divisors (67528259848).

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

56405420792 is a wasteful number, since it uses less digits than its factorization.

56405420792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85692 (or 85688 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 56405420792 in words is "fifty-six billion, four hundred five million, four hundred twenty thousand, seven hundred ninety-two".