208868072049 has 24 divisors (see below), whose sum is σ = 371321018432. Its totient is φ = 110172169440.

The previous prime is 208868072047. The next prime is 208868072053. The reversal of 208868072049 is 940270868802.

It is not a de Polignac number, because 208868072049 - 2¹ = 208868072047 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 208868071986 and 208868072004.

It is not an unprimeable number, because it can be changed into a prime (208868072041) 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, 127513267 + ... + 127514904.

Almost surely, 2^208868072049 is an apocalyptic number.

It is an amenable number.

208868072049 is a deficient number, since it is larger than the sum of its proper divisors (162452946383).

208868072049 is a wasteful number, since it uses less digits than its factorization.

208868072049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255028197 (or 255028194 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 208868072049 in words is "two hundred eight billion, eight hundred sixty-eight million, seventy-two thousand, forty-nine".