23057019920 has 40 divisors (see below), whose sum is σ = 58480989120. Its totient is φ = 8384370560.

The previous prime is 23057019919. The next prime is 23057019929. The reversal of 23057019920 is 2991075032.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (23057019929) 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, 13099700 + ... + 13101459.

It is an arithmetic number, because the mean of its divisors is an integer number (1462024728).

Almost surely, 2^23057019920 is an apocalyptic number.

23057019920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23057019920 is an abundant number, since it is smaller than the sum of its proper divisors (35423969200).

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

23057019920 is a wasteful number, since it uses less digits than its factorization.

23057019920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26201183 (or 26201177 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 38.

The spelling of 23057019920 in words is "twenty-three billion, fifty-seven million, nineteen thousand, nine hundred twenty".