168516316802 has 8 divisors (see below), whose sum is σ = 252776223612. Its totient is φ = 84257575600.

The previous prime is 168516316799. The next prime is 168516316853. The reversal of 168516316802 is 208613615861.

It can be written as a sum of positive squares in 2 ways, for example, as 127242737521 + 41273579281 = 356711^2 + 203159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 373052 + ... + 690072.

Almost surely, 2^168516316802 is an apocalyptic number.

168516316802 is a deficient number, since it is larger than the sum of its proper divisors (84259906810).

168516316802 is a wasteful number, since it uses less digits than its factorization.

168516316802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582804.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 168516316802 in words is "one hundred sixty-eight billion, five hundred sixteen million, three hundred sixteen thousand, eight hundred two".