161020080197 has 16 divisors (see below), whose sum is σ = 171003793920. Its totient is φ = 151191846000.

The previous prime is 161020080187. The next prime is 161020080209. The reversal of 161020080197 is 791080020161.

161020080197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161020080197 - 2⁴ = 161020080181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161020080187) by changing a digit.

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, 1207622 + ... + 1334312.

It is an arithmetic number, because the mean of its divisors is an integer number (10687737120).

Almost surely, 2^161020080197 is an apocalyptic number.

It is an amenable number.

161020080197 is a deficient number, since it is larger than the sum of its proper divisors (9983713723).

161020080197 is a wasteful number, since it uses less digits than its factorization.

161020080197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127304.

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 161020080197 in words is "one hundred sixty-one billion, twenty million, eighty thousand, one hundred ninety-seven".