161166155242136 has 48 divisors (see below), whose sum is σ = 332204292667800. Its totient is φ = 73246571911040.

The previous prime is 161166155242123. The next prime is 161166155242177. The reversal of 161166155242136 is 631242551661161.

161166155242136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5651501 + ... + 18822108.

Almost surely, 2^{161166155242136} is an apocalyptic number.

It is an amenable number.

161166155242136 is an abundant number, since it is smaller than the sum of its proper divisors (171038137425664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161166155242136 is a wasteful number, since it uses less digits than its factorization.

161166155242136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24480440 (or 24480425 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The spelling of 161166155242136 in words is "one hundred sixty-one trillion, one hundred sixty-six billion, one hundred fifty-five million, two hundred forty-two thousand, one hundred thirty-six".