166780055830830 has 32 divisors (see below), whose sum is σ = 431062298148384. Its totient is φ = 41053552204416.

The previous prime is 166780055830799. The next prime is 166780055830853. The reversal of 166780055830830 is 38038550087661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213820584009 + ... + 213820584788.

It is an arithmetic number, because the mean of its divisors is an integer number (13470696817137).

Almost surely, 2^{166780055830830} is an apocalyptic number.

166780055830830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166780055830830 is an abundant number, since it is smaller than the sum of its proper divisors (264282242317554).

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

166780055830830 is a wasteful number, since it uses less digits than its factorization.

166780055830830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427641168820.

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 166780055830830 in words is "one hundred sixty-six trillion, seven hundred eighty billion, fifty-five million, eight hundred thirty thousand, eight hundred thirty".