21943007304 has 16 divisors (see below), whose sum is σ = 54857518320. Its totient is φ = 7314335760.

The previous prime is 21943007263. The next prime is 21943007309. The reversal of 21943007304 is 40370034912.

It is not an unprimeable number, because it can be changed into a prime (21943007309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457145962 + ... + 457146009.

It is an arithmetic number, because the mean of its divisors is an integer number (3428594895).

Almost surely, 2^21943007304 is an apocalyptic number.

21943007304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21943007304 is an abundant number, since it is smaller than the sum of its proper divisors (32914511016).

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

21943007304 is a wasteful number, since it uses less digits than its factorization.

21943007304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914291980 (or 914291976 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 21943007304 in words is "twenty-one billion, nine hundred forty-three million, seven thousand, three hundred four".