161130055365 has 24 divisors (see below), whose sum is σ = 279303986520. Its totient is φ = 85932370944.

The previous prime is 161130055349. The next prime is 161130055369. The reversal of 161130055365 is 563550031161.

161130055365 is a `hidden beast` number, since 1 + 6 + 11 + 30 + 0 + 553 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4983371649 + 156146683716 = 70593^2 + 395154^2 .

It is not a de Polignac number, because 161130055365 - 2⁴ = 161130055349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161130055369) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1243689 + ... + 1367121.

It is an arithmetic number, because the mean of its divisors is an integer number (11637666105).

Almost surely, 2^161130055365 is an apocalyptic number.

161130055365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161130055365 is a deficient number, since it is larger than the sum of its proper divisors (118173931155).

161130055365 is a wasteful number, since it uses less digits than its factorization.

161130055365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152453 (or 152450 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The spelling of 161130055365 in words is "one hundred sixty-one billion, one hundred thirty million, fifty-five thousand, three hundred sixty-five".