208274089616 has 20 divisors (see below), whose sum is σ = 403538195712. Its totient is φ = 104135200416.

The previous prime is 208274089609. The next prime is 208274089619. The reversal of 208274089616 is 616980472802.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (208274089619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515041 + ... + 1646783.

Almost surely, 2^208274089616 is an apocalyptic number.

208274089616 is the 263486-th octagonal number.

It is an amenable number.

208274089616 is a deficient number, since it is larger than the sum of its proper divisors (195264106096).

208274089616 is a wasteful number, since it uses less digits than its factorization.

208274089616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230558 (or 230552 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 208274089616 in words is "two hundred eight billion, two hundred seventy-four million, eighty-nine thousand, six hundred sixteen".