869371138953 has 24 divisors (see below), whose sum is σ = 1299852889088. Its totient is φ = 559476100512.

The previous prime is 869371138931. The next prime is 869371138963. The reversal of 869371138953 is 359831173968.

869371138953 is a `hidden beast` number, since 86 + 9 + 371 + 138 + 9 + 53 = 666.

869371138953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869371138953 - 2³⁰ = 868297397129 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869371138963) 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, 10236151 + ... + 10320732.

Almost surely, 2^869371138953 is an apocalyptic number.

It is an amenable number.

869371138953 is a deficient number, since it is larger than the sum of its proper divisors (430481750135).

869371138953 is a wasteful number, since it uses less digits than its factorization.

869371138953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20557053 (or 20557050 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 869371138953 in words is "eight hundred sixty-nine billion, three hundred seventy-one million, one hundred thirty-eight thousand, nine hundred fifty-three".