23136722428 has 12 divisors (see below), whose sum is σ = 40847577120. Its totient is φ = 11465986112.

The previous prime is 23136722393. The next prime is 23136722429. The reversal of 23136722428 is 82422763132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136722429) 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, 25593268 + ... + 25594171.

It is an arithmetic number, because the mean of its divisors is an integer number (3403964760).

Almost surely, 2^23136722428 is an apocalyptic number.

It is an amenable number.

23136722428 is a deficient number, since it is larger than the sum of its proper divisors (17710854692).

23136722428 is a wasteful number, since it uses less digits than its factorization.

23136722428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51187556 (or 51187554 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The spelling of 23136722428 in words is "twenty-three billion, one hundred thirty-six million, seven hundred twenty-two thousand, four hundred twenty-eight".