21946712361984 has 176 divisors, whose sum is σ = 67236772399200. Its totient is φ = 7063309467648.

The previous prime is 21946712361971. The next prime is 21946712362037. The reversal of 21946712361984 is 48916321764912.

21946712361984 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 6 + 7 + 1 + 2 + 3 + 619 + 8 + 4 = 666.

It is a super-2 number, since 2×21946712361984² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12884247 + ... + 14487830.

Almost surely, 2^{21946712361984} is an apocalyptic number.

21946712361984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21946712361984 is an abundant number, since it is smaller than the sum of its proper divisors (45290060037216).

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

21946712361984 is a wasteful number, since it uses less digits than its factorization.

21946712361984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27372135 (or 27372111 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 21946712361984 in words is "twenty-one trillion, nine hundred forty-six billion, seven hundred twelve million, three hundred sixty-one thousand, nine hundred eighty-four".