161472170896 has 15 divisors (see below), whose sum is σ = 312855445371. Its totient is φ = 80735281776.

The previous prime is 161472170879. The next prime is 161472170939. The reversal of 161472170896 is 698071274161.

It is a happy number.

The square root of 161472170896 is 401836.

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

161472170896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian 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 2 ways as a sum of consecutive naturals, for example, 1557115 + ... + 1657573.

Almost surely, 2^161472170896 is an apocalyptic number.

161472170896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

161472170896 is the 401836-th square number.

It is an amenable number.

161472170896 is a deficient number, since it is larger than the sum of its proper divisors (151383274475).

161472170896 is an frugal number, since it uses more digits than its factorization.

161472170896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200926 (or 100461 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 161472170896 in words is "one hundred sixty-one billion, four hundred seventy-two million, one hundred seventy thousand, eight hundred ninety-six".