56126720772 has 96 divisors (see below), whose sum is σ = 146960956800. Its totient is φ = 18523201536.

The previous prime is 56126720737. The next prime is 56126720773. The reversal of 56126720772 is 27702762165.

56126720772 is a `hidden beast` number, since 5 + 612 + 6 + 7 + 20 + 7 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (56126720773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14850379 + ... + 14854157.

It is an arithmetic number, because the mean of its divisors is an integer number (1530843300).

Almost surely, 2^56126720772 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 56126720772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73480478400).

56126720772 is an abundant number, since it is smaller than the sum of its proper divisors (90834236028).

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

56126720772 is a wasteful number, since it uses less digits than its factorization.

56126720772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122 (or 5114 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The spelling of 56126720772 in words is "fifty-six billion, one hundred twenty-six million, seven hundred twenty thousand, seven hundred seventy-two".