161365289698 has 32 divisors (see below), whose sum is σ = 246903447168. Its totient is φ = 79074230400.

The previous prime is 161365289681. The next prime is 161365289713. The reversal of 161365289698 is 896982563161.

161365289698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50567283 + ... + 50570473.

It is an arithmetic number, because the mean of its divisors is an integer number (7715732724).

Almost surely, 2^161365289698 is an apocalyptic number.

161365289698 is a deficient number, since it is larger than the sum of its proper divisors (85538157470).

161365289698 is a wasteful number, since it uses less digits than its factorization.

161365289698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618.

The product of its digits is 33592320, while the sum is 64.

The spelling of 161365289698 in words is "one hundred sixty-one billion, three hundred sixty-five million, two hundred eighty-nine thousand, six hundred ninety-eight".