16031299444 has 12 divisors (see below), whose sum is σ = 28584109764. Its totient is φ = 7864410944.

The previous prime is 16031299411. The next prime is 16031299447. The reversal of 16031299444 is 44499213061.

It can be written as a sum of positive squares in 2 ways, for example, as 13740528400 + 2290771044 = 117220^2 + 47862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16031299444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16031299447) 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, 37809457 + ... + 37809880.

It is an arithmetic number, because the mean of its divisors is an integer number (2382009147).

Almost surely, 2^16031299444 is an apocalyptic number.

It is an amenable number.

16031299444 is a deficient number, since it is larger than the sum of its proper divisors (12552810320).

16031299444 is a wasteful number, since it uses less digits than its factorization.

16031299444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75619394 (or 75619392 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 16031299444 in words is "sixteen billion, thirty-one million, two hundred ninety-nine thousand, four hundred forty-four".