208041788857 has 24 divisors (see below), whose sum is σ = 249990727680. Its totient is φ = 172447490880.

The previous prime is 208041788849. The next prime is 208041788897. The reversal of 208041788857 is 758887140802.

It is not a de Polignac number, because 208041788857 - 2³ = 208041788849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208041788897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2138253 + ... + 2233429.

It is an arithmetic number, because the mean of its divisors is an integer number (10416280320).

Almost surely, 2^208041788857 is an apocalyptic number.

It is an amenable number.

208041788857 is a deficient number, since it is larger than the sum of its proper divisors (41948938823).

208041788857 is a wasteful number, since it uses less digits than its factorization.

208041788857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96661 (or 96654 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 58.

The spelling of 208041788857 in words is "two hundred eight billion, forty-one million, seven hundred eighty-eight thousand, eight hundred fifty-seven".