161166516110660 has 24 divisors (see below), whose sum is σ = 338804825198616. Its totient is φ = 64398960469760.

The previous prime is 161166516110657. The next prime is 161166516110681. The reversal of 161166516110660 is 66011615661161.

It can be written as a sum of positive squares in 4 ways, for example, as 33724408081984 + 127442108028676 = 5807272^2 + 11289026^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4227853871 + ... + 4227891990.

It is an arithmetic number, because the mean of its divisors is an integer number (14116867716609).

Almost surely, 2^{161166516110660} is an apocalyptic number.

161166516110660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161166516110660 is an abundant number, since it is smaller than the sum of its proper divisors (177638309087956).

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

161166516110660 is a wasteful number, since it uses less digits than its factorization.

161166516110660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8455746823 (or 8455746821 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 161166516110660 in words is "one hundred sixty-one trillion, one hundred sixty-six billion, five hundred sixteen million, one hundred ten thousand, six hundred sixty".