208978056086160 has 160 divisors (see below), whose sum is σ = 670180018055040. Its totient is φ = 53805120897024.

The previous prime is 208978056086123. The next prime is 208978056086161. The reversal of 208978056086160 is 61680650879802.

It is a junction number, because it is equal to n+sod(n) for n = 208978056086091 and 208978056086100.

It is not an unprimeable number, because it can be changed into a prime (208978056086161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684175392 + ... + 684480768.

It is an arithmetic number, because the mean of its divisors is an integer number (4188625112844).

Almost surely, 2^{208978056086160} is an apocalyptic number.

208978056086160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208978056086160 is an abundant number, since it is smaller than the sum of its proper divisors (461201961968880).

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

208978056086160 is a wasteful number, since it uses less digits than its factorization.

208978056086160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403745 (or 403739 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 208978056086160 in words is "two hundred eight trillion, nine hundred seventy-eight billion, fifty-six million, eighty-six thousand, one hundred sixty".