208813775134 has 4 divisors (see below), whose sum is σ = 313220662704. Its totient is φ = 104406887566.

The previous prime is 208813775123. The next prime is 208813775143. The reversal of 208813775134 is 431577318802.

It is a happy number.

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, 52203443782 + ... + 52203443785.

It is an arithmetic number, because the mean of its divisors is an integer number (78305165676).

Almost surely, 2^208813775134 is an apocalyptic number.

208813775134 is a deficient number, since it is larger than the sum of its proper divisors (104406887570).

208813775134 is a wasteful number, since it uses less digits than its factorization.

208813775134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104406887569.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 208813775134 in words is "two hundred eight billion, eight hundred thirteen million, seven hundred seventy-five thousand, one hundred thirty-four".