161061477796 has 24 divisors (see below), whose sum is σ = 297155144160. Its totient is φ = 76173235200.

The previous prime is 161061477763. The next prime is 161061477799. The reversal of 161061477796 is 697774160161.

It is not an unprimeable number, because it can be changed into a prime (161061477799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604350 + ... + 1701781.

It is an arithmetic number, because the mean of its divisors is an integer number (12381464340).

Almost surely, 2^161061477796 is an apocalyptic number.

It is an amenable number.

161061477796 is a deficient number, since it is larger than the sum of its proper divisors (136093666364).

161061477796 is a wasteful number, since it uses less digits than its factorization.

161061477796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306795 (or 3306793 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 161061477796 in words is "one hundred sixty-one billion, sixty-one million, four hundred seventy-seven thousand, seven hundred ninety-six".