838208551113 has 6 divisors (see below), whose sum is σ = 1210745684954. Its totient is φ = 558805700736.

The previous prime is 838208551109. The next prime is 838208551163. The reversal of 838208551113 is 311155802838.

838208551113 is a `hidden beast` number, since 8 + 3 + 82 + 0 + 8 + 551 + 1 + 13 = 666.

838208551113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 650106789264 + 188101761849 = 806292^2 + 433707^2 .

It is not a de Polignac number, because 838208551113 - 2² = 838208551109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838208551163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46567141720 + ... + 46567141737.

Almost surely, 2^838208551113 is an apocalyptic number.

It is an amenable number.

838208551113 is a deficient number, since it is larger than the sum of its proper divisors (372537133841).

838208551113 is a wasteful number, since it uses less digits than its factorization.

838208551113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93134283463 (or 93134283460 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 838208551113 in words is "eight hundred thirty-eight billion, two hundred eight million, five hundred fifty-one thousand, one hundred thirteen".