166718579874 has 32 divisors (see below), whose sum is σ = 415713862656. Its totient is φ = 43303527120.

The previous prime is 166718579837. The next prime is 166718579891. The reversal of 166718579874 is 478975817661.

It is a junction number, because it is equal to n+sod(n) for n = 166718579799 and 166718579808.

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 15 ways as a sum of consecutive naturals, for example, 180430902 + ... + 180431825.

It is an arithmetic number, because the mean of its divisors is an integer number (12991058208).

Almost surely, 2^166718579874 is an apocalyptic number.

166718579874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166718579874 is an abundant number, since it is smaller than the sum of its proper divisors (248995282782).

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

166718579874 is a wasteful number, since it uses less digits than its factorization.

166718579874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360862750.

The product of its digits is 142248960, while the sum is 69.

The spelling of 166718579874 in words is "one hundred sixty-six billion, seven hundred eighteen million, five hundred seventy-nine thousand, eight hundred seventy-four".