2643120255263 has 2 divisors, whose sum is σ = 2643120255264. Its totient is φ = 2643120255262.

The previous prime is 2643120255247. The next prime is 2643120255329. The reversal of 2643120255263 is 3625520213462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2643120255263 - 2⁴ = 2643120255247 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2643120255263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643120255463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321560127631 + 1321560127632.

It is an arithmetic number, because the mean of its divisors is an integer number (1321560127632).

Almost surely, 2^{2643120255263} is an apocalyptic number.

2643120255263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643120255263 is an equidigital number, since it uses as much as digits as its factorization.

2643120255263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 2643120255263 in words is "two trillion, six hundred forty-three billion, one hundred twenty million, two hundred fifty-five thousand, two hundred sixty-three".