16599446944 has 24 divisors (see below), whose sum is σ = 32846062788. Its totient is φ = 8257589760.

The previous prime is 16599446923. The next prime is 16599446947. The reversal of 16599446944 is 44964499561.

It can be written as a sum of positive squares in 2 ways, for example, as 14929907344 + 1669539600 = 122188^2 + 40860^2 .

It is not an unprimeable number, because it can be changed into a prime (16599446947) 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, 1310277 + ... + 1322884.

Almost surely, 2^16599446944 is an apocalyptic number.

It is an amenable number.

16599446944 is a deficient number, since it is larger than the sum of its proper divisors (16246615844).

16599446944 is a wasteful number, since it uses less digits than its factorization.

16599446944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633368 (or 2633360 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 61.

The spelling of 16599446944 in words is "sixteen billion, five hundred ninety-nine million, four hundred forty-six thousand, nine hundred forty-four".