161311413366 has 24 divisors (see below), whose sum is σ = 349561653480. Its totient is φ = 53762226336.

The previous prime is 161311413359. The next prime is 161311413377. The reversal of 161311413366 is 663314113161.

161311413366 is a `hidden beast` number, since 1 + 6 + 1 + 311 + 4 + 1 + 336 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161311413366.

It is a congruent number.

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, 565836 + ... + 801743.

It is an arithmetic number, because the mean of its divisors is an integer number (14565068895).

Almost surely, 2^161311413366 is an apocalyptic number.

161311413366 is an abundant number, since it is smaller than the sum of its proper divisors (188250240114).

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

161311413366 is a wasteful number, since it uses less digits than its factorization.

161311413366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374140 (or 1374137 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The spelling of 161311413366 in words is "one hundred sixty-one billion, three hundred eleven million, four hundred thirteen thousand, three hundred sixty-six".