161128878632 has 32 divisors (see below), whose sum is σ = 312203501280. Its totient is φ = 77911713600.

The previous prime is 161128878577. The next prime is 161128878667. The reversal of 161128878632 is 236878821161.

It is an unprimeable number.

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, 2284058 + ... + 2353545.

It is an arithmetic number, because the mean of its divisors is an integer number (9756359415).

Almost surely, 2^161128878632 is an apocalyptic number.

It is an amenable number.

161128878632 is a deficient number, since it is larger than the sum of its proper divisors (151074622648).

161128878632 is a wasteful number, since it uses less digits than its factorization.

161128878632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637753 (or 4637749 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The spelling of 161128878632 in words is "one hundred sixty-one billion, one hundred twenty-eight million, eight hundred seventy-eight thousand, six hundred thirty-two".