56729919122 has 18 divisors (see below), whose sum is σ = 90404030997. Its totient is φ = 26693737824.

The previous prime is 56729919097. The next prime is 56729919131. The reversal of 56729919122 is 22191992765.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51920635321 + 4809283801 = 227861^2 + 69349^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=168419.

It is a super-2 number, since 2×56729919122² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5721293 + ... + 5731199.

Almost surely, 2^56729919122 is an apocalyptic number.

56729919122 is a deficient number, since it is larger than the sum of its proper divisors (33674111875).

56729919122 is an frugal number, since it uses more digits than its factorization.

56729919122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850 (or 9926 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The spelling of 56729919122 in words is "fifty-six billion, seven hundred twenty-nine million, nine hundred nineteen thousand, one hundred twenty-two".