15799944466 has 12 divisors (see below), whose sum is σ = 25095193578. Its totient is φ = 7434923072.

The previous prime is 15799944409. The next prime is 15799944557. The reversal of 15799944466 is 66444999751.

It can be written as a sum of positive squares in 3 ways, for example, as 9068562441 + 6731382025 = 95229^2 + 82045^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15799944398 and 15799944407.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 722160 + ... + 743716.

Almost surely, 2^15799944466 is an apocalyptic number.

15799944466 is a deficient number, since it is larger than the sum of its proper divisors (9295249112).

15799944466 is an frugal number, since it uses more digits than its factorization.

15799944466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43133 (or 21576 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 64.

The spelling of 15799944466 in words is "fifteen billion, seven hundred ninety-nine million, nine hundred forty-four thousand, four hundred sixty-six".