166946612688 has 60 divisors (see below), whose sum is σ = 469173631680. Its totient is φ = 55416019008.

The previous prime is 166946612669. The next prime is 166946612689. The reversal of 166946612688 is 886216649661.

166946612688 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 4 + 6 + 612 + 6 + 8 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166946612689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2391006 + ... + 2459837.

It is an arithmetic number, because the mean of its divisors is an integer number (7819560528).

Almost surely, 2^166946612688 is an apocalyptic number.

166946612688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166946612688 is an abundant number, since it is smaller than the sum of its proper divisors (302227018992).

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

166946612688 is a wasteful number, since it uses less digits than its factorization.

166946612688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851096 (or 4851087 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 166946612688 in words is "one hundred sixty-six billion, nine hundred forty-six million, six hundred twelve thousand, six hundred eighty-eight".