208974856694 has 4 divisors (see below), whose sum is σ = 313462285044. Its totient is φ = 104487428346.

The previous prime is 208974856579. The next prime is 208974856759. The reversal of 208974856694 is 496658479802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52243714172 + ... + 52243714175.

It is an arithmetic number, because the mean of its divisors is an integer number (78365571261).

Almost surely, 2^208974856694 is an apocalyptic number.

208974856694 is a deficient number, since it is larger than the sum of its proper divisors (104487428350).

208974856694 is a wasteful number, since it uses less digits than its factorization.

208974856694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104487428349.

The product of its (nonzero) digits is 209018880, while the sum is 68.

The spelling of 208974856694 in words is "two hundred eight billion, nine hundred seventy-four million, eight hundred fifty-six thousand, six hundred ninety-four".