21903869344 has 24 divisors (see below), whose sum is σ = 49283706528. Its totient is φ = 9387372480.

The previous prime is 21903869321. The next prime is 21903869369. The reversal of 21903869344 is 44396830912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48892342 + ... + 48892789.

It is an arithmetic number, because the mean of its divisors is an integer number (2053487772).

Almost surely, 2^21903869344 is an apocalyptic number.

It is an amenable number.

21903869344 is an abundant number, since it is smaller than the sum of its proper divisors (27379837184).

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

21903869344 is an equidigital number, since it uses as much as digits as its factorization.

21903869344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97785148 (or 97785140 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 21903869344 in words is "twenty-one billion, nine hundred three million, eight hundred sixty-nine thousand, three hundred forty-four".