161302909443072 has 88 divisors (see below), whose sum is σ = 441550820762256. Its totient is φ = 52314457079808.

The previous prime is 161302909443007. The next prime is 161302909443149. The reversal of 161302909443072 is 270344909203161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709446573 + ... + 709673900.

Almost surely, 2^{161302909443072} is an apocalyptic number.

161302909443072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161302909443072 is an abundant number, since it is smaller than the sum of its proper divisors (280247911319184).

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

161302909443072 is a wasteful number, since it uses less digits than its factorization.

161302909443072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419120533 (or 1419120515 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 161302909443072 in words is "one hundred sixty-one trillion, three hundred two billion, nine hundred nine million, four hundred forty-three thousand, seventy-two".