16166514999999 has 120 divisors (see below), whose sum is σ = 27254325156480. Its totient is φ = 8519635365696.

The previous prime is 16166514999923. The next prime is 16166515000067. The reversal of 16166514999999 is 99999941566161.

It is a happy number.

It is not a de Polignac number, because 16166514999999 - 2⁹ = 16166514999487 is a prime.

It is a super-2 number, since 2×16166514999999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16166514979999) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 1488761032 + ... + 1488771890.

It is an arithmetic number, because the mean of its divisors is an integer number (227119376304).

Almost surely, 2^{16166514999999} is an apocalyptic number.

16166514999999 is a deficient number, since it is larger than the sum of its proper divisors (11087810156481).

16166514999999 is a wasteful number, since it uses less digits than its factorization.

16166514999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12139 (or 12105 counting only the distinct ones).

The product of its digits is 2295825120, while the sum is 84.

The spelling of 16166514999999 in words is "sixteen trillion, one hundred sixty-six billion, five hundred fourteen million, nine hundred ninety-nine thousand, nine hundred ninety-nine".