16506444404 has 12 divisors (see below), whose sum is σ = 28990562244. Its totient is φ = 8223426624.

The previous prime is 16506444379. The next prime is 16506444413. The reversal of 16506444404 is 40444460561.

It can be written as a sum of positive squares in 2 ways, for example, as 2376367504 + 14130076900 = 48748^2 + 118870^2 .

It is a congruent number.

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, 7447649 + ... + 7449864.

It is an arithmetic number, because the mean of its divisors is an integer number (2415880187).

Almost surely, 2^16506444404 is an apocalyptic number.

It is an amenable number.

16506444404 is a deficient number, since it is larger than the sum of its proper divisors (12484117840).

16506444404 is a wasteful number, since it uses less digits than its factorization.

16506444404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14897794 (or 14897792 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 16506444404 in words is "sixteen billion, five hundred six million, four hundred forty-four thousand, four hundred four".