56426447139 has 24 divisors (see below), whose sum is σ = 76047488448. Its totient is φ = 37215121680.

The previous prime is 56426447131. The next prime is 56426447173. The reversal of 56426447139 is 93174462465.

It is not a de Polignac number, because 56426447139 - 2³ = 56426447131 is a prime.

It is a super-2 number, since 2×56426447139² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56426447091 and 56426447100.

It is not an unprimeable number, because it can be changed into a prime (56426447131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18990924 + ... + 18993894.

It is an arithmetic number, because the mean of its divisors is an integer number (3168645352).

Almost surely, 2^56426447139 is an apocalyptic number.

56426447139 is a deficient number, since it is larger than the sum of its proper divisors (19621041309).

56426447139 is a wasteful number, since it uses less digits than its factorization.

56426447139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535 (or 3368 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 56426447139 in words is "fifty-six billion, four hundred twenty-six million, four hundred forty-seven thousand, one hundred thirty-nine".