21093004318464 has 216 divisors, whose sum is σ = 67607239935872. Its totient is φ = 6280795054080.

The previous prime is 21093004318457. The next prime is 21093004318499. The reversal of 21093004318464 is 46481340039012.

21093004318464 is a `hidden beast` number, since 2 + 109 + 30 + 0 + 43 + 18 + 464 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10429987 + ... + 12287010.

Almost surely, 2^{21093004318464} is an apocalyptic number.

21093004318464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21093004318464 is an abundant number, since it is smaller than the sum of its proper divisors (46514235617408).

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

21093004318464 is a wasteful number, since it uses less digits than its factorization.

21093004318464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22717063 (or 22717046 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 21093004318464 in words is "twenty-one trillion, ninety-three billion, four million, three hundred eighteen thousand, four hundred sixty-four".