23979117261 has 16 divisors (see below), whose sum is σ = 35133311808. Its totient is φ = 14426716800.

The previous prime is 23979117259. The next prime is 23979117311. The reversal of 23979117261 is 16271197932.

It is not a de Polignac number, because 23979117261 - 2¹ = 23979117259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23979117261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23979117221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2647450 + ... + 2656491.

It is an arithmetic number, because the mean of its divisors is an integer number (2195831988).

Almost surely, 2^23979117261 is an apocalyptic number.

It is an amenable number.

23979117261 is a deficient number, since it is larger than the sum of its proper divisors (11154194547).

23979117261 is a wasteful number, since it uses less digits than its factorization.

23979117261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304092.

The product of its digits is 285768, while the sum is 48.

The spelling of 23979117261 in words is "twenty-three billion, nine hundred seventy-nine million, one hundred seventeen thousand, two hundred sixty-one".