817116255 has 40 divisors (see below), whose sum is σ = 1486667952. Its totient is φ = 429276672.

The previous prime is 817116253. The next prime is 817116257. The reversal of 817116255 is 552611718.

817116255 is a `hidden beast` number, since 8 + 17 + 11 + 625 + 5 = 666.

817116255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (817116253) and next prime (817116257).

It is not a de Polignac number, because 817116255 - 2¹ = 817116253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817116253) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12079 + ... + 42191.

Almost surely, 2^817116255 is an apocalyptic number.

817116255 is a deficient number, since it is larger than the sum of its proper divisors (669551697).

817116255 is a wasteful number, since it uses less digits than its factorization.

817116255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30197 (or 30188 counting only the distinct ones).

The product of its digits is 16800, while the sum is 36.

The square root of 817116255 is about 28585.2454073776. The cubic root of 817116255 is about 934.8916553041.

The spelling of 817116255 in words is "eight hundred seventeen million, one hundred sixteen thousand, two hundred fifty-five".