21924795923 has 4 divisors (see below), whose sum is σ = 21926865048. Its totient is φ = 21922726800.

The previous prime is 21924795917. The next prime is 21924795929. The reversal of 21924795923 is 32959742912.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21924795917) and next prime (21924795929).

It is a cyclic number.

It is not a de Polignac number, because 21924795923 - 2⁶ = 21924795859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21924795929) 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, 1018586 + ... + 1039887.

It is an arithmetic number, because the mean of its divisors is an integer number (5481716262).

Almost surely, 2^21924795923 is an apocalyptic number.

21924795923 is a deficient number, since it is larger than the sum of its proper divisors (2069125).

21924795923 is a wasteful number, since it uses less digits than its factorization.

21924795923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069124.

The product of its digits is 2449440, while the sum is 53.

The spelling of 21924795923 in words is "twenty-one billion, nine hundred twenty-four million, seven hundred ninety-five thousand, nine hundred twenty-three".