161794688312 has 16 divisors (see below), whose sum is σ = 305297304360. Its totient is φ = 80382073824.

The previous prime is 161794688303. The next prime is 161794688333. The reversal of 161794688312 is 213886497161.

It is a happy number.

161794688312 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 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, 64407458 + ... + 64409969.

Almost surely, 2^161794688312 is an apocalyptic number.

It is an amenable number.

161794688312 is a deficient number, since it is larger than the sum of its proper divisors (143502616048).

161794688312 is a wasteful number, since it uses less digits than its factorization.

161794688312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128817590 (or 128817586 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 161794688312 in words is "one hundred sixty-one billion, seven hundred ninety-four million, six hundred eighty-eight thousand, three hundred twelve".