208873861345 has 16 divisors (see below), whose sum is σ = 259070676480. Its totient is φ = 161498419200.

The previous prime is 208873861331. The next prime is 208873861379. The reversal of 208873861345 is 543168378802.

It is not a de Polignac number, because 208873861345 - 2³⁵ = 174514122977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756991 + ... + 995380.

It is an arithmetic number, because the mean of its divisors is an integer number (16191917280).

Almost surely, 2^208873861345 is an apocalyptic number.

It is an amenable number.

208873861345 is a deficient number, since it is larger than the sum of its proper divisors (50196815135).

208873861345 is a wasteful number, since it uses less digits than its factorization.

208873861345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753176.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 208873861345 in words is "two hundred eight billion, eight hundred seventy-three million, eight hundred sixty-one thousand, three hundred forty-five".