23921358940 has 24 divisors (see below), whose sum is σ = 51855334272. Its totient is φ = 9259880640.

The previous prime is 23921358919. The next prime is 23921358941. The reversal of 23921358940 is 4985312932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23921358941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19290799 + ... + 19292038.

It is an arithmetic number, because the mean of its divisors is an integer number (2160638928).

Almost surely, 2^23921358940 is an apocalyptic number.

23921358940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23921358940 is an abundant number, since it is smaller than the sum of its proper divisors (27933975332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23921358940 is a wasteful number, since it uses less digits than its factorization.

23921358940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38582877 (or 38582875 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 23921358940 in words is "twenty-three billion, nine hundred twenty-one million, three hundred fifty-eight thousand, nine hundred forty".