21304262344 has 16 divisors (see below), whose sum is σ = 41322923100. Its totient is φ = 10284816192.

The previous prime is 21304262321. The next prime is 21304262359. The reversal of 21304262344 is 44326240312.

It can be written as a sum of positive squares in 2 ways, for example, as 18724638244 + 2579624100 = 136838^2 + 50790^2 .

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, 45914127 + ... + 45914590.

Almost surely, 2^21304262344 is an apocalyptic number.

It is an amenable number.

21304262344 is a deficient number, since it is larger than the sum of its proper divisors (20018660756).

21304262344 is a wasteful number, since it uses less digits than its factorization.

21304262344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91828752 (or 91828748 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 21304262344 in words is "twenty-one billion, three hundred four million, two hundred sixty-two thousand, three hundred forty-four".