23153939812 has 24 divisors (see below), whose sum is σ = 40619803392. Its totient is φ = 11548320000.

The previous prime is 23153939747. The next prime is 23153939821. The reversal of 23153939812 is 21893935132.

It is a super-2 number, since 2×23153939812² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2949012 + ... + 2956852.

It is an arithmetic number, because the mean of its divisors is an integer number (1692491808).

Almost surely, 2^23153939812 is an apocalyptic number.

It is an amenable number.

23153939812 is a deficient number, since it is larger than the sum of its proper divisors (17465863580).

23153939812 is a wasteful number, since it uses less digits than its factorization.

23153939812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9579 (or 9577 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The spelling of 23153939812 in words is "twenty-three billion, one hundred fifty-three million, nine hundred thirty-nine thousand, eight hundred twelve".