21532000524 has 24 divisors (see below), whose sum is σ = 50738776368. Its totient is φ = 7106270400.

The previous prime is 21532000513. The next prime is 21532000531. The reversal of 21532000524 is 42500023512.

It is a junction number, because it is equal to n+sod(n) for n = 21532000494 and 21532000503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8881627 + ... + 8884050.

It is an arithmetic number, because the mean of its divisors is an integer number (2114115682).

Almost surely, 2^21532000524 is an apocalyptic number.

It is an amenable number.

21532000524 is an abundant number, since it is smaller than the sum of its proper divisors (29206775844).

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

21532000524 is a wasteful number, since it uses less digits than its factorization.

21532000524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17765785 (or 17765783 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The spelling of 21532000524 in words is "twenty-one billion, five hundred thirty-two million, five hundred twenty-four", and thus it is an aban number.