23933193856 has 64 divisors (see below), whose sum is σ = 56015013600. Its totient is φ = 10041891840.

The previous prime is 23933193847. The next prime is 23933193857. The reversal of 23933193856 is 65839133932.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×23933193856² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (23933193857) 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, 635466 + ... + 672073.

Almost surely, 2^23933193856 is an apocalyptic number.

23933193856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23933193856 is an abundant number, since it is smaller than the sum of its proper divisors (32081819744).

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

23933193856 is a wasteful number, since it uses less digits than its factorization.

23933193856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307577 (or 1307565 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 52.

The spelling of 23933193856 in words is "twenty-three billion, nine hundred thirty-three million, one hundred ninety-three thousand, eight hundred fifty-six".