10138765656 has 16 divisors (see below), whose sum is σ = 25346914200. Its totient is φ = 3379588544.

The previous prime is 10138765613. The next prime is 10138765657. The reversal of 10138765656 is 65656783101.

It is a super-2 number, since 2×10138765656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10138765657) 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, 211224261 + ... + 211224308.

Almost surely, 2^10138765656 is an apocalyptic number.

It is an amenable number.

10138765656 is an abundant number, since it is smaller than the sum of its proper divisors (15208148544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10138765656 is a wasteful number, since it uses less digits than its factorization.

10138765656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422448578 (or 422448574 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 10138765656 in words is "ten billion, one hundred thirty-eight million, seven hundred sixty-five thousand, six hundred fifty-six".