38956344656 has 20 divisors (see below), whose sum is σ = 75493189332. Its totient is φ = 19474231296.

The previous prime is 38956344653. The next prime is 38956344671. The reversal of 38956344656 is 65644365983.

It can be written as a sum of positive squares in 2 ways, for example, as 8150478400 + 30805866256 = 90280^2 + 175516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38956344595 and 38956344604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38956344653) 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, 163931 + ... + 323706.

Almost surely, 2^38956344656 is an apocalyptic number.

It is an amenable number.

38956344656 is a deficient number, since it is larger than the sum of its proper divisors (36536844676).

38956344656 is a wasteful number, since it uses less digits than its factorization.

38956344656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492638 (or 492632 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 59.

The spelling of 38956344656 in words is "thirty-eight billion, nine hundred fifty-six million, three hundred forty-four thousand, six hundred fifty-six".