166651505600 has 42 divisors (see below), whose sum is σ = 410066864904. Its totient is φ = 66660601600.

The previous prime is 166651505593. The next prime is 166651505611. The reversal of 166651505600 is 6505156661.

166651505600 is digitally balanced in base 3, 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52076996 + ... + 52080195.

Almost surely, 2^166651505600 is an apocalyptic number.

166651505600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166651505600 is an abundant number, since it is smaller than the sum of its proper divisors (243415359304).

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

166651505600 is a wasteful number, since it uses less digits than its factorization.

166651505600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104157213 (or 104157198 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 166651505600 in words is "one hundred sixty-six billion, six hundred fifty-one million, five hundred five thousand, six hundred".