161187175876 has 6 divisors (see below), whose sum is σ = 282077557790. Its totient is φ = 80593587936.

The previous prime is 161187175801. The next prime is 161187175937. The reversal of 161187175876 is 678571781161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 161001562500 + 185613376 = 401250^2 + 13624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161187175876.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20148396981 + ... + 20148396988.

Almost surely, 2^161187175876 is an apocalyptic number.

It is an amenable number.

161187175876 is a deficient number, since it is larger than the sum of its proper divisors (120890381914).

161187175876 is a wasteful number, since it uses less digits than its factorization.

161187175876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40296793973 (or 40296793971 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 58.

The spelling of 161187175876 in words is "one hundred sixty-one billion, one hundred eighty-seven million, one hundred seventy-five thousand, eight hundred seventy-six".