168708799265 has 4 divisors (see below), whose sum is σ = 202450559124. Its totient is φ = 134967039408.

The previous prime is 168708799247. The next prime is 168708799271. The reversal of 168708799265 is 562997807861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 562997807861 = 47 ⋅11978676763.

It can be written as a sum of positive squares in 2 ways, for example, as 27872970304 + 140835828961 = 166952^2 + 375281^2 .

It is a cyclic number.

It is not a de Polignac number, because 168708799265 - 2⁸ = 168708799009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168708799195 and 168708799204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16870879922 + ... + 16870879931.

It is an arithmetic number, because the mean of its divisors is an integer number (50612639781).

Almost surely, 2^168708799265 is an apocalyptic number.

It is an amenable number.

168708799265 is a deficient number, since it is larger than the sum of its proper divisors (33741759859).

168708799265 is an equidigital number, since it uses as much as digits as its factorization.

168708799265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33741759858.

The product of its (nonzero) digits is 91445760, while the sum is 68.

The spelling of 168708799265 in words is "one hundred sixty-eight billion, seven hundred eight million, seven hundred ninety-nine thousand, two hundred sixty-five".