8256563272019 has 2 divisors, whose sum is σ = 8256563272020. Its totient is φ = 8256563272018.

The previous prime is 8256563271997. The next prime is 8256563272033. The reversal of 8256563272019 is 9102723656528.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8256563272019 - 2²⁸ = 8256294836563 is a prime.

It is a super-2 number, since 2×8256563272019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8256563272079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128281636009 + 4128281636010.

It is an arithmetic number, because the mean of its divisors is an integer number (4128281636010).

Almost surely, 2^{8256563272019} is an apocalyptic number.

8256563272019 is a deficient number, since it is larger than the sum of its proper divisors (1).

8256563272019 is an equidigital number, since it uses as much as digits as its factorization.

8256563272019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 8256563272019 in words is "eight trillion, two hundred fifty-six billion, five hundred sixty-three million, two hundred seventy-two thousand, nineteen".