161313290713 has 2 divisors, whose sum is σ = 161313290714. Its totient is φ = 161313290712.

The previous prime is 161313290707. The next prime is 161313290729. The reversal of 161313290713 is 317092313161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146269532304 + 15043758409 = 382452^2 + 122653^2 .

It is a cyclic number.

It is not a de Polignac number, because 161313290713 - 2¹³ = 161313282521 is a prime.

It is not a weakly prime, because it can be changed into another prime (161313290813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80656645356 + 80656645357.

It is an arithmetic number, because the mean of its divisors is an integer number (80656645357).

Almost surely, 2^161313290713 is an apocalyptic number.

It is an amenable number.

161313290713 is a deficient number, since it is larger than the sum of its proper divisors (1).

161313290713 is an equidigital number, since it uses as much as digits as its factorization.

161313290713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 161313290713 in words is "one hundred sixty-one billion, three hundred thirteen million, two hundred ninety thousand, seven hundred thirteen".