161517885314 has 8 divisors (see below), whose sum is σ = 242672061180. Its totient is φ = 80627198256.

The previous prime is 161517885299. The next prime is 161517885341. The reversal of 161517885314 is 413588715161.

It can be written as a sum of positive squares in 2 ways, for example, as 153454743289 + 8063142025 = 391733^2 + 89795^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65870669 + ... + 65873120.

Almost surely, 2^161517885314 is an apocalyptic number.

161517885314 is a deficient number, since it is larger than the sum of its proper divisors (81154175866).

161517885314 is a wasteful number, since it uses less digits than its factorization.

161517885314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131744404.

The product of its digits is 806400, while the sum is 50.

The spelling of 161517885314 in words is "one hundred sixty-one billion, five hundred seventeen million, eight hundred eighty-five thousand, three hundred fourteen".