56392237778 has 6 divisors (see below), whose sum is σ = 84588860421. Its totient is φ = 28195950972.

The previous prime is 56392237771. The next prime is 56392237799. The reversal of 56392237778 is 87773229365.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 55919479729 + 472758049 = 236473^2 + 21743^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=167917.

It is a super-2 number, since 2×56392237778² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56392237771) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251876 + ... + 419792.

Almost surely, 2^56392237778 is an apocalyptic number.

56392237778 is a deficient number, since it is larger than the sum of its proper divisors (28196622643).

56392237778 is an frugal number, since it uses more digits than its factorization.

56392237778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335836 (or 167919 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 59.

The spelling of 56392237778 in words is "fifty-six billion, three hundred ninety-two million, two hundred thirty-seven thousand, seven hundred seventy-eight".