8256742267 has 2 divisors, whose sum is σ = 8256742268. Its totient is φ = 8256742266.

The previous prime is 8256742259. The next prime is 8256742301. The reversal of 8256742267 is 7622476528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8256742267 - 2³ = 8256742259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8256742267.

It is not a weakly prime, because it can be changed into another prime (8256742367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128371133 + 4128371134.

It is an arithmetic number, because the mean of its divisors is an integer number (4128371134).

Almost surely, 2^8256742267 is an apocalyptic number.

8256742267 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256742267 is an equidigital number, since it uses as much as digits as its factorization.

8256742267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The square root of 8256742267 is about 90866.6180013320. The cubic root of 8256742267 is about 2021.1703072824.

The spelling of 8256742267 in words is "eight billion, two hundred fifty-six million, seven hundred forty-two thousand, two hundred sixty-seven".