6856137255 has 16 divisors (see below), whose sum is σ = 11967076224. Its totient is φ = 3324187680.

The previous prime is 6856137221. The next prime is 6856137271. The reversal of 6856137255 is 5527316586.

6856137255 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6856137255 - 2¹⁴ = 6856120871 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20776009 + ... + 20776338.

It is an arithmetic number, because the mean of its divisors is an integer number (747942264).

Almost surely, 2^6856137255 is an apocalyptic number.

6856137255 is a deficient number, since it is larger than the sum of its proper divisors (5110938969).

6856137255 is a wasteful number, since it uses less digits than its factorization.

6856137255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41552366.

The product of its digits is 1512000, while the sum is 48.

The square root of 6856137255 is about 82801.7949986593. The cubic root of 6856137255 is about 1899.7356284979.

The spelling of 6856137255 in words is "six billion, eight hundred fifty-six million, one hundred thirty-seven thousand, two hundred fifty-five".