208977841602873 has 24 divisors (see below), whose sum is σ = 344984863718976. Its totient is φ = 119413981533600.

The previous prime is 208977841602857. The next prime is 208977841603067. The reversal of 208977841602873 is 378206148779802.

It is a happy number.

208977841602873 is a `hidden beast` number, since 2 + 0 + 8 + 9 + 7 + 7 + 8 + 4 + 1 + 602 + 8 + 7 + 3 = 666.

It is not a de Polignac number, because 208977841602873 - 2⁴ = 208977841602857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (208977841102873) 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, 22839438 + ... + 30652823.

It is an arithmetic number, because the mean of its divisors is an integer number (14374369321624).

Almost surely, 2^{208977841602873} is an apocalyptic number.

It is an amenable number.

208977841602873 is a deficient number, since it is larger than the sum of its proper divisors (136007022116103).

208977841602873 is a wasteful number, since it uses less digits than its factorization.

208977841602873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53554285 (or 53554282 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 72.

The spelling of 208977841602873 in words is "two hundred eight trillion, nine hundred seventy-seven billion, eight hundred forty-one million, six hundred two thousand, eight hundred seventy-three".