166167631616 has 36 divisors (see below), whose sum is σ = 379069913712. Its totient is φ = 71214698496.

The previous prime is 166167631613. The next prime is 166167631621. The reversal of 166167631616 is 616136761661.

It is a super-2 number, since 2×166167631616² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166167631613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46361945 + ... + 46365528.

Almost surely, 2^166167631616 is an apocalyptic number.

166167631616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166167631616 is an abundant number, since it is smaller than the sum of its proper divisors (212902282096).

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

166167631616 is an frugal number, since it uses more digits than its factorization.

166167631616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92727496 (or 92727482 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The spelling of 166167631616 in words is "one hundred sixty-six billion, one hundred sixty-seven million, six hundred thirty-one thousand, six hundred sixteen".