21468954483456 has 36 divisors (see below), whose sum is σ = 57138727819992. Its totient is φ = 7156318160896.

The previous prime is 21468954483397. The next prime is 21468954483469. The reversal of 21468954483456 is 65438445986412.

It is a happy number.

It is a super-2 number, since 2×21468954483456² (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 3 ways as a sum of consecutive naturals, for example, 13977183141 + ... + 13977184676.

Almost surely, 2^{21468954483456} is an apocalyptic number.

It is an amenable number.

21468954483456 is an abundant number, since it is smaller than the sum of its proper divisors (35669773336536).

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

21468954483456 is an equidigital number, since it uses as much as digits as its factorization.

21468954483456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27954367836 (or 27954367822 counting only the distinct ones).

The product of its digits is 796262400, while the sum is 69.

The spelling of 21468954483456 in words is "twenty-one trillion, four hundred sixty-eight billion, nine hundred fifty-four million, four hundred eighty-three thousand, four hundred fifty-six".