208934436867 has 12 divisors (see below), whose sum is σ = 301656820824. Its totient is φ = 128575037760.

The previous prime is 208934436791. The next prime is 208934436869. The reversal of 208934436867 is 768634439802.

It is not a de Polignac number, because 208934436867 - 2¹⁵ = 208934404099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208934436867.

It is not an unprimeable number, because it can be changed into a prime (208934436869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206049234 + ... + 206050247.

It is an arithmetic number, because the mean of its divisors is an integer number (25138068402).

Almost surely, 2^208934436867 is an apocalyptic number.

208934436867 is a deficient number, since it is larger than the sum of its proper divisors (92722383957).

208934436867 is a wasteful number, since it uses less digits than its factorization.

208934436867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412099510 (or 412099497 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 60.

The spelling of 208934436867 in words is "two hundred eight billion, nine hundred thirty-four million, four hundred thirty-six thousand, eight hundred sixty-seven".