21576890496 has 96 divisors (see below), whose sum is σ = 66670998480. Its totient is φ = 6164820480.

The previous prime is 21576890477. The next prime is 21576890513. The reversal of 21576890496 is 69409867512.

It is a tau number, because it is divible by the number of its divisors (96).

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 11 ways as a sum of consecutive naturals, for example, 554550 + ... + 592181.

Almost surely, 2^21576890496 is an apocalyptic number.

It is an amenable number.

21576890496 is an abundant number, since it is smaller than the sum of its proper divisors (45094107984).

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

21576890496 is a wasteful number, since it uses less digits than its factorization.

21576890496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146762 (or 1146743 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 21576890496 in words is "twenty-one billion, five hundred seventy-six million, eight hundred ninety thousand, four hundred ninety-six".