23359759921 has 3 divisors (see below), whose sum is σ = 23359912761. Its totient is φ = 23359607082.

The previous prime is 23359759909. The next prime is 23359759991. The reversal of 23359759921 is 12995795332.

The square root of 23359759921 is 152839.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 23359759921 - 2⁷ = 23359759793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23359759991) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 76420 + ... + 229258.

It is an arithmetic number, because the mean of its divisors is an integer number (7786637587).

Almost surely, 2^23359759921 is an apocalyptic number.

23359759921 is the 152839-th square number.

23359759921 is the 76420-th centered octagonal number.

It is an amenable number.

23359759921 is a deficient number, since it is larger than the sum of its proper divisors (152840).

23359759921 is an frugal number, since it uses more digits than its factorization.

23359759921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305678 (or 152839 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 55.

The spelling of 23359759921 in words is "twenty-three billion, three hundred fifty-nine million, seven hundred fifty-nine thousand, nine hundred twenty-one".