168592461987856 has 15 divisors (see below), whose sum is σ = 326647995729951. Its totient is φ = 84296205025296.

The previous prime is 168592461987821. The next prime is 168592461987941. The reversal of 168592461987856 is 658789164295861.

The square root of 168592461987856 is 12984316.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 50314225 + ... + 53560303.

Almost surely, 2^{168592461987856} is an apocalyptic number.

168592461987856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

168592461987856 is the 12984316-th square number.

It is an amenable number.

168592461987856 is a deficient number, since it is larger than the sum of its proper divisors (158055533742095).

168592461987856 is an frugal number, since it uses more digits than its factorization.

168592461987856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492166 (or 3246081 counting only the distinct ones).

The product of its digits is 12541132800, while the sum is 85.

The spelling of 168592461987856 in words is "one hundred sixty-eight trillion, five hundred ninety-two billion, four hundred sixty-one million, nine hundred eighty-seven thousand, eight hundred fifty-six".