56438509444 has 12 divisors (see below), whose sum is σ = 98817464844. Its totient is φ = 28204948064.

The previous prime is 56438509441. The next prime is 56438509447. The reversal of 56438509444 is 44490583465.

It is an interprime number because it is at equal distance from previous prime (56438509441) and next prime (56438509447).

It can be written as a sum of positive squares in 2 ways, for example, as 12518924544 + 43919584900 = 111888^2 + 209570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56438509391 and 56438509400.

It is not an unprimeable number, because it can be changed into a prime (56438509441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567787 + ... + 3583570.

It is an arithmetic number, because the mean of its divisors is an integer number (8234788737).

Almost surely, 2^56438509444 is an apocalyptic number.

It is an amenable number.

56438509444 is a deficient number, since it is larger than the sum of its proper divisors (42378955400).

56438509444 is a wasteful number, since it uses less digits than its factorization.

56438509444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153334 (or 7153332 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 52.

The spelling of 56438509444 in words is "fifty-six billion, four hundred thirty-eight million, five hundred nine thousand, four hundred forty-four".