21348250368 has 72 divisors (see below), whose sum is σ = 57780609600. Its totient is φ = 6995457024.

The previous prime is 21348250349. The next prime is 21348250379. The reversal of 21348250368 is 86305284312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190258 + ... + 280881.

Almost surely, 2^21348250368 is an apocalyptic number.

It is an amenable number.

21348250368 is an abundant number, since it is smaller than the sum of its proper divisors (36432359232).

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

21348250368 is an equidigital number, since it uses as much as digits as its factorization.

21348250368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471217 (or 471203 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 21348250368 in words is "twenty-one billion, three hundred forty-eight million, two hundred fifty thousand, three hundred sixty-eight".