168821769318 has 8 divisors (see below), whose sum is σ = 337643538648. Its totient is φ = 56273923104.

The previous prime is 168821769283. The next prime is 168821769323. The reversal of 168821769318 is 813967128861.

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

168821769318 is an admirable number.

It is a congruent number.

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, 14068480771 + ... + 14068480782.

It is an arithmetic number, because the mean of its divisors is an integer number (42205442331).

Almost surely, 2^168821769318 is an apocalyptic number.

168821769318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168821769318 is a wasteful number, since it uses less digits than its factorization.

168821769318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28136961558.

The product of its digits is 6967296, while the sum is 60.

The spelling of 168821769318 in words is "one hundred sixty-eight billion, eight hundred twenty-one million, seven hundred sixty-nine thousand, three hundred eighteen".