23272562921 has 4 divisors (see below), whose sum is σ = 23667013200. Its totient is φ = 22878112644.

The previous prime is 23272562881. The next prime is 23272562923. The reversal of 23272562921 is 12926527232.

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 a de Polignac number, because none of the positive numbers 2^k-23272562921 is a prime.

It is a super-2 number, since 2×23272562921² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23272562923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197225051 + ... + 197225168.

It is an arithmetic number, because the mean of its divisors is an integer number (5916753300).

Almost surely, 2^23272562921 is an apocalyptic number.

It is an amenable number.

23272562921 is a deficient number, since it is larger than the sum of its proper divisors (394450279).

23272562921 is an equidigital number, since it uses as much as digits as its factorization.

23272562921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394450278.

The product of its digits is 181440, while the sum is 41.

The spelling of 23272562921 in words is "twenty-three billion, two hundred seventy-two million, five hundred sixty-two thousand, nine hundred twenty-one".