208119946513 has 4 divisors (see below), whose sum is σ = 209176393140. Its totient is φ = 207063499888.

The previous prime is 208119946501. The next prime is 208119946561. The reversal of 208119946513 is 315649911802.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167189396544 + 40930549969 = 408888^2 + 202313^2 .

It is a cyclic number.

It is not a de Polignac number, because 208119946513 - 2²⁵ = 208086392081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208119946213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528223018 + ... + 528223411.

It is an arithmetic number, because the mean of its divisors is an integer number (52294098285).

Almost surely, 2^208119946513 is an apocalyptic number.

It is an amenable number.

208119946513 is a deficient number, since it is larger than the sum of its proper divisors (1056446627).

208119946513 is a wasteful number, since it uses less digits than its factorization.

208119946513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056446626.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 208119946513 in words is "two hundred eight billion, one hundred nineteen million, nine hundred forty-six thousand, five hundred thirteen".