166613433018888 has 64 divisors (see below), whose sum is σ = 423781591420800. Its totient is φ = 54573214510080.

The previous prime is 166613433018881. The next prime is 166613433018899. The reversal of 166613433018888 is 888810334316661.

It is not an unprimeable number, because it can be changed into a prime (166613433018881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54918756 + ... + 57873107.

It is an arithmetic number, because the mean of its divisors is an integer number (6621587365950).

Almost surely, 2^{166613433018888} is an apocalyptic number.

It is an amenable number.

166613433018888 is an abundant number, since it is smaller than the sum of its proper divisors (257168158401912).

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

166613433018888 is a wasteful number, since it uses less digits than its factorization.

166613433018888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112792942 (or 112792938 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 66.

The spelling of 166613433018888 in words is "one hundred sixty-six trillion, six hundred thirteen billion, four hundred thirty-three million, eighteen thousand, eight hundred eighty-eight".