827642276731 has 2 divisors, whose sum is σ = 827642276732. Its totient is φ = 827642276730.

The previous prime is 827642276717. The next prime is 827642276779. The reversal of 827642276731 is 137672246728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 827642276731 - 2²⁵ = 827608722299 is a prime.

It is a super-2 number, since 2×827642276731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (827642276231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413821138365 + 413821138366.

It is an arithmetic number, because the mean of its divisors is an integer number (413821138366).

Almost surely, 2^827642276731 is an apocalyptic number.

827642276731 is a deficient number, since it is larger than the sum of its proper divisors (1).

827642276731 is an equidigital number, since it uses as much as digits as its factorization.

827642276731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9483264, while the sum is 55.

The spelling of 827642276731 in words is "eight hundred twenty-seven billion, six hundred forty-two million, two hundred seventy-six thousand, seven hundred thirty-one".