161940984595 has 8 divisors (see below), whose sum is σ = 209277580176. Its totient is φ = 119587188576.

The previous prime is 161940984577. The next prime is 161940984619. The reversal of 161940984595 is 595489049161.

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

It is a cyclic number.

It is not a de Polignac number, because 161940984595 - 2⁵ = 161940984563 is a prime.

It is a Duffinian 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, 1245699817 + ... + 1245699946.

It is an arithmetic number, because the mean of its divisors is an integer number (26159697522).

Almost surely, 2^161940984595 is an apocalyptic number.

161940984595 is a deficient number, since it is larger than the sum of its proper divisors (47336595581).

161940984595 is a wasteful number, since it uses less digits than its factorization.

161940984595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491399781.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 161940984595 in words is "one hundred sixty-one billion, nine hundred forty million, nine hundred eighty-four thousand, five hundred ninety-five".