166634616875500 has 48 divisors (see below), whose sum is σ = 364280273884800. Its totient is φ = 66589694620800.

The previous prime is 166634616875491. The next prime is 166634616875527. The reversal of 166634616875500 is 5578616436661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159860305 + ... + 160899304.

It is an arithmetic number, because the mean of its divisors is an integer number (7589172372600).

Almost surely, 2^{166634616875500} is an apocalyptic number.

166634616875500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166634616875500 is an abundant number, since it is smaller than the sum of its proper divisors (197645657009300).

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

166634616875500 is a wasteful number, since it uses less digits than its factorization.

166634616875500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320760667 (or 320760655 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 64.

The spelling of 166634616875500 in words is "one hundred sixty-six trillion, six hundred thirty-four billion, six hundred sixteen million, eight hundred seventy-five thousand, five hundred".