165055516610120 has 64 divisors (see below), whose sum is σ = 384506248417200. Its totient is φ = 63691602365440.

The previous prime is 165055516610119. The next prime is 165055516610177. The reversal of 165055516610120 is 21016615550561.

It can be written as a sum of positive squares in 8 ways, for example, as 143414468434084 + 21641048176036 = 11975578^2 + 4651994^2 .

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, 58871039 + ... + 61610958.

Almost surely, 2^{165055516610120} is an apocalyptic number.

165055516610120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165055516610120 is an abundant number, since it is smaller than the sum of its proper divisors (219450731807080).

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

165055516610120 is a wasteful number, since it uses less digits than its factorization.

165055516610120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120483218 (or 120483214 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 44.

The spelling of 165055516610120 in words is "one hundred sixty-five trillion, fifty-five billion, five hundred sixteen million, six hundred ten thousand, one hundred twenty".