166805905300 has 36 divisors (see below), whose sum is σ = 370386703456. Its totient is φ = 65170677600.

The previous prime is 166805905297. The next prime is 166805905319. The reversal of 166805905300 is 3509508661.

166805905300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19391736 + ... + 19400335.

Almost surely, 2^166805905300 is an apocalyptic number.

166805905300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166805905300 is an abundant number, since it is smaller than the sum of its proper divisors (203580798156).

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

166805905300 is a wasteful number, since it uses less digits than its factorization.

166805905300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38792128 (or 38792121 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 166805905300 in words is "one hundred sixty-six billion, eight hundred five million, nine hundred five thousand, three hundred".