23981069691 has 12 divisors (see below), whose sum is σ = 34642047232. Its totient is φ = 15986122416.

The previous prime is 23981069687. The next prime is 23981069711. The reversal of 23981069691 is 19696018932.

It is not a de Polignac number, because 23981069691 - 2² = 23981069687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23981069611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24390 + ... + 220356.

Almost surely, 2^23981069691 is an apocalyptic number.

23981069691 is a deficient number, since it is larger than the sum of its proper divisors (10660977541).

23981069691 is a wasteful number, since it uses less digits than its factorization.

23981069691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209570 (or 209567 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 23981069691 in words is "twenty-three billion, nine hundred eighty-one million, sixty-nine thousand, six hundred ninety-one".