21162524024020 has 24 divisors (see below), whose sum is σ = 44442058891104. Its totient is φ = 8464865144736.

The previous prime is 21162524024003. The next prime is 21162524024077. The reversal of 21162524024020 is 2042042526112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7823922 + ... + 10175401.

It is an arithmetic number, because the mean of its divisors is an integer number (1851752453796).

Almost surely, 2^{21162524024020} is an apocalyptic number.

21162524024020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21162524024020 is an abundant number, since it is smaller than the sum of its proper divisors (23279534867084).

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

21162524024020 is a wasteful number, since it uses less digits than its factorization.

21162524024020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18058119 (or 18058117 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 21162524024020 in words is "twenty-one trillion, one hundred sixty-two billion, five hundred twenty-four million, twenty-four thousand, twenty".