166686325316830 has 32 divisors (see below), whose sum is σ = 338597927295840. Its totient is φ = 58523098542720.

The previous prime is 166686325316767. The next prime is 166686325316873. The reversal of 166686325316830 is 38613523686661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26126380089 + ... + 26126386468.

It is an arithmetic number, because the mean of its divisors is an integer number (10581185227995).

Almost surely, 2^{166686325316830} is an apocalyptic number.

166686325316830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166686325316830 is an abundant number, since it is smaller than the sum of its proper divisors (171911601979010).

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

166686325316830 is a wasteful number, since it uses less digits than its factorization.

166686325316830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52252766604.

The product of its (nonzero) digits is 134369280, while the sum is 64.

The spelling of 166686325316830 in words is "one hundred sixty-six trillion, six hundred eighty-six billion, three hundred twenty-five million, three hundred sixteen thousand, eight hundred thirty".