6398817255 has 48 divisors (see below), whose sum is σ = 11794442400. Its totient is φ = 3198081024.

The previous prime is 6398817199. The next prime is 6398817287. The reversal of 6398817255 is 5527188936.

It is not a de Polignac number, because 6398817255 - 2¹⁰ = 6398816231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 160296 + ... + 196194.

It is an arithmetic number, because the mean of its divisors is an integer number (245717550).

Almost surely, 2^6398817255 is an apocalyptic number.

6398817255 is a deficient number, since it is larger than the sum of its proper divisors (5395625145).

6398817255 is a wasteful number, since it uses less digits than its factorization.

6398817255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36160 (or 36157 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 6398817255 is about 79992.6075021936. The cubic root of 6398817255 is about 1856.5211552326.

The spelling of 6398817255 in words is "six billion, three hundred ninety-eight million, eight hundred seventeen thousand, two hundred fifty-five".