161129648882 has 12 divisors (see below), whose sum is σ = 245860432926. Its totient is φ = 79199315520.

The previous prime is 161129648843. The next prime is 161129648887. The reversal of 161129648882 is 288846921161.

It can be written as a sum of positive squares in only one way, i.e., 129570481681 + 31559167201 = 359959^2 + 177649^2 .

It is not an unprimeable number, because it can be changed into a prime (161129648887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11565119 + ... + 11579042.

Almost surely, 2^161129648882 is an apocalyptic number.

161129648882 is a deficient number, since it is larger than the sum of its proper divisors (84730784044).

161129648882 is an equidigital number, since it uses as much as digits as its factorization.

161129648882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23144281 (or 23144222 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 56.

The spelling of 161129648882 in words is "one hundred sixty-one billion, one hundred twenty-nine million, six hundred forty-eight thousand, eight hundred eighty-two".