21996285744024 has 48 divisors (see below), whose sum is σ = 59730459383400. Its totient is φ = 7312749341184.

The previous prime is 21996285744007. The next prime is 21996285744029. The reversal of 21996285744024 is 42044758269912.

It is a happy number.

21996285744024 is a `hidden beast` number, since 2 + 1 + 9 + 96 + 2 + 85 + 7 + 440 + 24 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21996285744029) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 403012249 + ... + 403066824.

Almost surely, 2^{21996285744024} is an apocalyptic number.

21996285744024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21996285744024 is an abundant number, since it is smaller than the sum of its proper divisors (37734173639376).

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

21996285744024 is a wasteful number, since it uses less digits than its factorization.

21996285744024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806079464 (or 806079457 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 21996285744024 in words is "twenty-one trillion, nine hundred ninety-six billion, two hundred eighty-five million, seven hundred forty-four thousand, twenty-four".