16352503611665 has 16 divisors (see below), whose sum is σ = 21861171939600. Its totient is φ = 11659291698432.

The previous prime is 16352503611659. The next prime is 16352503611679. The reversal of 16352503611665 is 56611630525361.

It can be written as a sum of positive squares in 8 ways, for example, as 2977267426576 + 13375236185089 = 1725476^2 + 3657217^2 .

It is a cyclic number.

It is not a de Polignac number, because 16352503611665 - 2²⁴ = 16352486834449 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4337532230 + ... + 4337535999.

It is an arithmetic number, because the mean of its divisors is an integer number (1366323246225).

Almost surely, 2^{16352503611665} is an apocalyptic number.

It is an amenable number.

16352503611665 is a deficient number, since it is larger than the sum of its proper divisors (5508668327935).

16352503611665 is a wasteful number, since it uses less digits than its factorization.

16352503611665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8675068276.

The product of its (nonzero) digits is 2916000, while the sum is 50.

The spelling of 16352503611665 in words is "sixteen trillion, three hundred fifty-two billion, five hundred three million, six hundred eleven thousand, six hundred sixty-five".