161368899615344 has 20 divisors (see below), whose sum is σ = 312674447279280. Its totient is φ = 80678719672320.

The previous prime is 161368899615247. The next prime is 161368899615349. The reversal of 161368899615344 is 443516998863161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161368899615349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357901124 + ... + 358351715.

It is an arithmetic number, because the mean of its divisors is an integer number (15633722363964).

Almost surely, 2^{161368899615344} is an apocalyptic number.

It is an amenable number.

161368899615344 is a deficient number, since it is larger than the sum of its proper divisors (151305547663936).

161368899615344 is a wasteful number, since it uses less digits than its factorization.

161368899615344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716266928 (or 716266922 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 74.

The spelling of 161368899615344 in words is "one hundred sixty-one trillion, three hundred sixty-eight billion, eight hundred ninety-nine million, six hundred fifteen thousand, three hundred forty-four".