21463438524 has 48 divisors (see below), whose sum is σ = 54645566976. Its totient is φ = 6502720000.

The previous prime is 21463438489. The next prime is 21463438571. The reversal of 21463438524 is 42583436412.

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 15 ways as a sum of consecutive naturals, for example, 752524 + ... + 780524.

It is an arithmetic number, because the mean of its divisors is an integer number (1138449312).

Almost surely, 2^21463438524 is an apocalyptic number.

It is an amenable number.

21463438524 is an abundant number, since it is smaller than the sum of its proper divisors (33182128452).

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

21463438524 is a wasteful number, since it uses less digits than its factorization.

21463438524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33826 (or 33824 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The spelling of 21463438524 in words is "twenty-one billion, four hundred sixty-three million, four hundred thirty-eight thousand, five hundred twenty-four".