16666164631644 has 96 divisors (see below), whose sum is σ = 44859531773952. Its totient is φ = 4768232448000.

The previous prime is 16666164631639. The next prime is 16666164631651. The reversal of 16666164631644 is 44613646166661.

It is a super-2 number, since 2×16666164631644² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49501317 + ... + 49836860.

It is an arithmetic number, because the mean of its divisors is an integer number (467286789312).

Almost surely, 2^{16666164631644} is an apocalyptic number.

It is an amenable number.

16666164631644 is an abundant number, since it is smaller than the sum of its proper divisors (28193367142308).

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

16666164631644 is a wasteful number, since it uses less digits than its factorization.

16666164631644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99338267 (or 99338265 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 60.

The spelling of 16666164631644 in words is "sixteen trillion, six hundred sixty-six billion, one hundred sixty-four million, six hundred thirty-one thousand, six hundred forty-four".