166884338732740 has 24 divisors (see below), whose sum is σ = 350510608348992. Its totient is φ = 66743545586400.

The previous prime is 166884338732681. The next prime is 166884338732759. The reversal of 166884338732740 is 47237833488661.

It is a hoax number, since the sum of its digits (70) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166884338732740.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636734874 + ... + 636996913.

It is an arithmetic number, because the mean of its divisors is an integer number (14604608681208).

Almost surely, 2^{166884338732740} is an apocalyptic number.

166884338732740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166884338732740 is an abundant number, since it is smaller than the sum of its proper divisors (183626269616252).

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

166884338732740 is a wasteful number, since it uses less digits than its factorization.

166884338732740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273738347 (or 1273738345 counting only the distinct ones).

The product of its (nonzero) digits is 780337152, while the sum is 70.

The spelling of 166884338732740 in words is "one hundred sixty-six trillion, eight hundred eighty-four billion, three hundred thirty-eight million, seven hundred thirty-two thousand, seven hundred forty".