16166958636 has 48 divisors (see below), whose sum is σ = 38821870080. Its totient is φ = 5232588480.

The previous prime is 16166958631. The next prime is 16166958677. The reversal of 16166958636 is 63685966161.

It is a super-2 number, since 2×16166958636² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16166958631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180925 + ... + 255083.

It is an arithmetic number, because the mean of its divisors is an integer number (808788960).

Almost surely, 2^16166958636 is an apocalyptic number.

It is an amenable number.

16166958636 is an abundant number, since it is smaller than the sum of its proper divisors (22654911444).

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

16166958636 is a wasteful number, since it uses less digits than its factorization.

16166958636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74694 (or 74692 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The spelling of 16166958636 in words is "sixteen billion, one hundred sixty-six million, nine hundred fifty-eight thousand, six hundred thirty-six".