16499663165 has 8 divisors (see below), whose sum is σ = 19884574008. Its totient is φ = 13143078400.

The previous prime is 16499663153. The next prime is 16499663177. The reversal of 16499663165 is 56136699461.

It is an interprime number because it is at equal distance from previous prime (16499663153) and next prime (16499663177).

It can be written as a sum of positive squares in 4 ways, for example, as 1081225924 + 15418437241 = 32882^2 + 124171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16499663165 - 2¹⁸ = 16499401021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16499663165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7080236 + ... + 7082565.

It is an arithmetic number, because the mean of its divisors is an integer number (2485571751).

Almost surely, 2^16499663165 is an apocalyptic number.

It is an amenable number.

16499663165 is a deficient number, since it is larger than the sum of its proper divisors (3384910843).

16499663165 is a wasteful number, since it uses less digits than its factorization.

16499663165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14163039.

The product of its digits is 6298560, while the sum is 56.

The spelling of 16499663165 in words is "sixteen billion, four hundred ninety-nine million, six hundred sixty-three thousand, one hundred sixty-five".