161269968996 has 36 divisors (see below), whose sum is σ = 407726893392. Its totient is φ = 53747128944.

The previous prime is 161269968991. The next prime is 161269969013. The reversal of 161269968996 is 699869962161.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (161269968991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189546 + ... + 598721.

Almost surely, 2^161269968996 is an apocalyptic number.

It is an amenable number.

161269968996 is an abundant number, since it is smaller than the sum of its proper divisors (246456924396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161269968996 is a wasteful number, since it uses less digits than its factorization.

161269968996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793960 (or 793955 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 72.

The spelling of 161269968996 in words is "one hundred sixty-one billion, two hundred sixty-nine million, nine hundred sixty-eight thousand, nine hundred ninety-six".