168869765856 has 48 divisors (see below), whose sum is σ = 483581605248. Its totient is φ = 51172656000.

The previous prime is 168869765849. The next prime is 168869765861. The reversal of 168869765856 is 658567968861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79956220 + ... + 79958331.

It is an arithmetic number, because the mean of its divisors is an integer number (10074616776).

Almost surely, 2^168869765856 is an apocalyptic number.

168869765856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168869765856 is an abundant number, since it is smaller than the sum of its proper divisors (314711839392).

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

168869765856 is a wasteful number, since it uses less digits than its factorization.

168869765856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159914575 (or 159914567 counting only the distinct ones).

The product of its digits is 1045094400, while the sum is 75.

The spelling of 168869765856 in words is "one hundred sixty-eight billion, eight hundred sixty-nine million, seven hundred sixty-five thousand, eight hundred fifty-six".