22964481721 has 4 divisors (see below), whose sum is σ = 23962937472. Its totient is φ = 21966025972.

The previous prime is 22964481713. The next prime is 22964481731. The reversal of 22964481721 is 12718446922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22964481721 - 2³ = 22964481713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22964481731) 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, 499227841 + ... + 499227886.

It is an arithmetic number, because the mean of its divisors is an integer number (5990734368).

Almost surely, 2^22964481721 is an apocalyptic number.

It is an amenable number.

22964481721 is a deficient number, since it is larger than the sum of its proper divisors (998455751).

22964481721 is an equidigital number, since it uses as much as digits as its factorization.

22964481721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998455750.

The product of its digits is 387072, while the sum is 46.

The spelling of 22964481721 in words is "twenty-two billion, nine hundred sixty-four million, four hundred eighty-one thousand, seven hundred twenty-one".