166516515108 has 36 divisors (see below), whose sum is σ = 445676556780. Its totient is φ = 52240475136.

The previous prime is 166516515089. The next prime is 166516515133. The reversal of 166516515108 is 801515615661.

166516515108 is a `hidden beast` number, since 16 + 6 + 5 + 16 + 515 + 108 = 666.

166516515108 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156587986944 + 9928528164 = 395712^2 + 99642^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136042293 + ... + 136043516.

It is an arithmetic number, because the mean of its divisors is an integer number (12379904355).

Almost surely, 2^166516515108 is an apocalyptic number.

166516515108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166516515108 is an abundant number, since it is smaller than the sum of its proper divisors (279160041672).

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

166516515108 is a wasteful number, since it uses less digits than its factorization.

166516515108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272085836 (or 272085831 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The spelling of 166516515108 in words is "one hundred sixty-six billion, five hundred sixteen million, five hundred fifteen thousand, one hundred eight".