161869315756 has 12 divisors (see below), whose sum is σ = 289859007592. Its totient is φ = 79052456448.

The previous prime is 161869315721. The next prime is 161869315819. The reversal of 161869315756 is 657513968161.

161869315756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161869315756.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470550165 + ... + 470550508.

Almost surely, 2^161869315756 is an apocalyptic number.

It is an amenable number.

161869315756 is a deficient number, since it is larger than the sum of its proper divisors (127989691836).

161869315756 is a wasteful number, since it uses less digits than its factorization.

161869315756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941100720 (or 941100718 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 58.

The spelling of 161869315756 in words is "one hundred sixty-one billion, eight hundred sixty-nine million, three hundred fifteen thousand, seven hundred fifty-six".