161311413365 has 8 divisors (see below), whose sum is σ = 193579911168. Its totient is φ = 129044987280.

The previous prime is 161311413359. The next prime is 161311413377. The reversal of 161311413365 is 563314113161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161311413365 - 2¹² = 161311409269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341141 + ... + 662570.

It is an arithmetic number, because the mean of its divisors is an integer number (24197488896).

Almost surely, 2^161311413365 is an apocalyptic number.

It is an amenable number.

161311413365 is a deficient number, since it is larger than the sum of its proper divisors (32268497803).

161311413365 is a wasteful number, since it uses less digits than its factorization.

161311413365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035859.

The product of its digits is 19440, while the sum is 35.

The spelling of 161311413365 in words is "one hundred sixty-one billion, three hundred eleven million, four hundred thirteen thousand, three hundred sixty-five".