16166816694 has 48 divisors (see below), whose sum is σ = 40043371680. Its totient is φ = 4617792000.

The previous prime is 16166816573. The next prime is 16166816713. The reversal of 16166816694 is 49661866161.

16166816694 is a `hidden beast` number, since 1 + 616 + 6 + 8 + 16 + 6 + 9 + 4 = 666.

It is a super-2 number, since 2×16166816694² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16166816694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 488092 + ... + 520160.

It is an arithmetic number, because the mean of its divisors is an integer number (834236910).

Almost surely, 2^16166816694 is an apocalyptic number.

16166816694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16166816694 is an abundant number, since it is smaller than the sum of its proper divisors (23876554986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16166816694 is a wasteful number, since it uses less digits than its factorization.

16166816694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36085 (or 36082 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 16166816694 in words is "sixteen billion, one hundred sixty-six million, eight hundred sixteen thousand, six hundred ninety-four".