161359676416 has 33 divisors (see below), whose sum is σ = 322587473061. Its totient is φ = 80673411072.

The previous prime is 161359676411. The next prime is 161359676437. The reversal of 161359676416 is 614676953161.

The square root of 161359676416 is 401696.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 160897254400 + 462422016 = 401120^2 + 21504^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161359676411) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 12847996 + ... + 12860548.

Almost surely, 2^161359676416 is an apocalyptic number.

161359676416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

161359676416 is the 401696-th square number.

It is an amenable number.

161359676416 is a deficient number, since it is larger than the sum of its proper divisors (161227796645).

161359676416 is an frugal number, since it uses more digits than its factorization.

161359676416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25126 (or 12555 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 55.

The spelling of 161359676416 in words is "one hundred sixty-one billion, three hundred fifty-nine million, six hundred seventy-six thousand, four hundred sixteen".