161768096969626 has 24 divisors (see below), whose sum is σ = 298872870634836. Its totient is φ = 65250997096320.

The previous prime is 161768096969543. The next prime is 161768096969629. The reversal of 161768096969626 is 626969690867161.

It can be written as a sum of positive squares in 2 ways, for example, as 145144545284025 + 16623551685601 = 12047595^2 + 4077199^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161768096969626.

It is not an unprimeable number, because it can be changed into a prime (161768096969629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48549847365 + ... + 48549850696.

Almost surely, 2^{161768096969626} is an apocalyptic number.

161768096969626 is a deficient number, since it is larger than the sum of its proper divisors (137104773665210).

161768096969626 is a wasteful number, since it uses less digits than its factorization.

161768096969626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97099698094 (or 97099698087 counting only the distinct ones).

The product of its (nonzero) digits is 3809369088, while the sum is 82.

The spelling of 161768096969626 in words is "one hundred sixty-one trillion, seven hundred sixty-eight billion, ninety-six million, nine hundred sixty-nine thousand, six hundred twenty-six".