8266510643 has 2 divisors, whose sum is σ = 8266510644. Its totient is φ = 8266510642.

The previous prime is 8266510621. The next prime is 8266510649. The reversal of 8266510643 is 3460156628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8266510643 - 2⁸ = 8266510387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8266510643.

It is not a weakly prime, because it can be changed into another prime (8266510649) 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, 4133255321 + 4133255322.

It is an arithmetic number, because the mean of its divisors is an integer number (4133255322).

Almost surely, 2^8266510643 is an apocalyptic number.

8266510643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8266510643 is an equidigital number, since it uses as much as digits as its factorization.

8266510643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 8266510643 is about 90920.3532934183. The cubic root of 8266510643 is about 2021.9670610116.

The spelling of 8266510643 in words is "eight billion, two hundred sixty-six million, five hundred ten thousand, six hundred forty-three".