166940766174 has 64 divisors (see below), whose sum is σ = 413548724736. Its totient is φ = 43747876224.

The previous prime is 166940766121. The next prime is 166940766199. The reversal of 166940766174 is 471667049661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888012 + ... + 1059455.

It is an arithmetic number, because the mean of its divisors is an integer number (6461698824).

Almost surely, 2^166940766174 is an apocalyptic number.

166940766174 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166940766174 is an abundant number, since it is smaller than the sum of its proper divisors (246607958562).

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

166940766174 is a wasteful number, since it uses less digits than its factorization.

166940766174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947649.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 166940766174 in words is "one hundred sixty-six billion, nine hundred forty million, seven hundred sixty-six thousand, one hundred seventy-four".