168769785856 has 195 divisors, whose sum is σ = 396753143363. Its totient is φ = 71777771520.

The previous prime is 168769785841. The next prime is 168769785869. The reversal of 168769785856 is 658587967861.

The square root of 168769785856 is 410816.

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

It is a Duffinian number.

Its product of digits (1219276800) is a multiple of the sum of its prime divisors (140).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1288318911 + ... + 1288319041.

Almost surely, 2^168769785856 is an apocalyptic number.

168769785856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

168769785856 is the 410816-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168769785856

168769785856 is an abundant number, since it is smaller than the sum of its proper divisors (227983357507).

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

168769785856 is an frugal number, since it uses more digits than its factorization.

168769785856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 140 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 76.

The spelling of 168769785856 in words is "one hundred sixty-eight billion, seven hundred sixty-nine million, seven hundred eighty-five thousand, eight hundred fifty-six".