22815528864 has 48 divisors (see below), whose sum is σ = 59945635008. Its totient is φ = 7598208512.

The previous prime is 22815528863. The next prime is 22815528907. The reversal of 22815528864 is 46882551822.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (22815528863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3012 + ... + 213635.

It is an arithmetic number, because the mean of its divisors is an integer number (1248867396).

Almost surely, 2^22815528864 is an apocalyptic number.

22815528864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22815528864 is an abundant number, since it is smaller than the sum of its proper divisors (37130106144).

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

22815528864 is a wasteful number, since it uses less digits than its factorization.

22815528864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217757 (or 217749 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 51.

The spelling of 22815528864 in words is "twenty-two billion, eight hundred fifteen million, five hundred twenty-eight thousand, eight hundred sixty-four".