22812978456 has 32 divisors (see below), whose sum is σ = 63369385200. Its totient is φ = 7604326080.

The previous prime is 22812978443. The next prime is 22812978479. The reversal of 22812978456 is 65487921822.

22812978456 is a `hidden beast` number, since 22 + 81 + 2 + 97 + 8 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52807605 + ... + 52808036.

Almost surely, 2^22812978456 is an apocalyptic number.

It is an amenable number.

22812978456 is an abundant number, since it is smaller than the sum of its proper divisors (40556406744).

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

22812978456 is a wasteful number, since it uses less digits than its factorization.

22812978456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105615656 (or 105615646 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 22812978456 in words is "twenty-two billion, eight hundred twelve million, nine hundred seventy-eight thousand, four hundred fifty-six".