21943767304 has 16 divisors (see below), whose sum is σ = 42256579500. Its totient is φ = 10675346112.

The previous prime is 21943767283. The next prime is 21943767319. The reversal of 21943767304 is 40376734912.

It can be written as a sum of positive squares in 2 ways, for example, as 20589380100 + 1354387204 = 143490^2 + 36802^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37066879 + ... + 37067470.

Almost surely, 2^21943767304 is an apocalyptic number.

It is an amenable number.

21943767304 is a deficient number, since it is larger than the sum of its proper divisors (20312812196).

21943767304 is a wasteful number, since it uses less digits than its factorization.

21943767304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74134392 (or 74134388 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 21943767304 in words is "twenty-one billion, nine hundred forty-three million, seven hundred sixty-seven thousand, three hundred four".