166428650622672 has 40 divisors (see below), whose sum is σ = 477711867529280. Its totient is φ = 55476216874080.

The previous prime is 166428650622629. The next prime is 166428650622677. The reversal of 166428650622672 is 276226056824661.

166428650622672 is a `hidden beast` number, since 1 + 6 + 6 + 42 + 8 + 6 + 506 + 22 + 67 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166428650622677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192625752604 + ... + 192625753467.

It is an arithmetic number, because the mean of its divisors is an integer number (11942796688232).

Almost surely, 2^{166428650622672} is an apocalyptic number.

166428650622672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166428650622672 is an abundant number, since it is smaller than the sum of its proper divisors (311283216906608).

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

166428650622672 is a wasteful number, since it uses less digits than its factorization.

166428650622672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385251506088 (or 385251506076 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 63.

The spelling of 166428650622672 in words is "one hundred sixty-six trillion, four hundred twenty-eight billion, six hundred fifty million, six hundred twenty-two thousand, six hundred seventy-two".