166722964772800 has 84 divisors (see below), whose sum is σ = 410992683997240. Its totient is φ = 66567267486720.

The previous prime is 166722964772773. The next prime is 166722964772873. The reversal of 166722964772800 is 8277469227661.

166722964772800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94373295 + ... + 96123694.

Almost surely, 2^{166722964772800} is an apocalyptic number.

166722964772800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166722964772800 is an abundant number, since it is smaller than the sum of its proper divisors (244269719224440).

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

166722964772800 is a wasteful number, since it uses less digits than its factorization.

166722964772800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190497558 (or 190497543 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 67.

The spelling of 166722964772800 in words is "one hundred sixty-six trillion, seven hundred twenty-two billion, nine hundred sixty-four million, seven hundred seventy-two thousand, eight hundred".