827642276231 has 2 divisors, whose sum is σ = 827642276232. Its totient is φ = 827642276230.

The previous prime is 827642276213. The next prime is 827642276323. The reversal of 827642276231 is 132672246728.

Together with previous prime (827642276213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827642276231 is a prime.

It is a super-2 number, since 2×827642276231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 827642276231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827642276731) 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, 413821138115 + 413821138116.

It is an arithmetic number, because the mean of its divisors is an integer number (413821138116).

Almost surely, 2^827642276231 is an apocalyptic number.

827642276231 is a deficient number, since it is larger than the sum of its proper divisors (1).

827642276231 is an equidigital number, since it uses as much as digits as its factorization.

827642276231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 50.

The spelling of 827642276231 in words is "eight hundred twenty-seven billion, six hundred forty-two million, two hundred seventy-six thousand, two hundred thirty-one".