21497032624032 has 144 divisors (see below), whose sum is σ = 70216439529600. Its totient is φ = 6111144838656.

The previous prime is 21497032624019. The next prime is 21497032624033. The reversal of 21497032624032 is 23042623079412.

21497032624032 is a `hidden beast` number, since 2 + 1 + 497 + 0 + 32 + 62 + 40 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×21497032624032² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21497032624033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26390803 + ... + 27193170.

It is an arithmetic number, because the mean of its divisors is an integer number (487614163400).

Almost surely, 2^{21497032624032} is an apocalyptic number.

It is an amenable number.

21497032624032 is an abundant number, since it is smaller than the sum of its proper divisors (48719406905568).

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

21497032624032 is a wasteful number, since it uses less digits than its factorization.

21497032624032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53584195 (or 53584184 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 21497032624032 in words is "twenty-one trillion, four hundred ninety-seven billion, thirty-two million, six hundred twenty-four thousand, thirty-two".