161873314318 has 16 divisors (see below), whose sum is σ = 255984520320. Its totient is φ = 76558310136.

The previous prime is 161873314289. The next prime is 161873314321. The reversal of 161873314318 is 813413378161.

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, 3267396 + ... + 3316567.

It is an arithmetic number, because the mean of its divisors is an integer number (15999032520).

Almost surely, 2^161873314318 is an apocalyptic number.

161873314318 is a deficient number, since it is larger than the sum of its proper divisors (94111206002).

161873314318 is a wasteful number, since it uses less digits than its factorization.

161873314318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584631.

The product of its digits is 290304, while the sum is 46.

The spelling of 161873314318 in words is "one hundred sixty-one billion, eight hundred seventy-three million, three hundred fourteen thousand, three hundred eighteen".