2643265064413 has 2 divisors, whose sum is σ = 2643265064414. Its totient is φ = 2643265064412.

The previous prime is 2643265064389. The next prime is 2643265064497. The reversal of 2643265064413 is 3144605623462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2316477912004 + 326787152409 = 1521998^2 + 571653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2643265064413 is a prime.

It is a super-2 number, since 2×2643265064413² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643265064113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321632532206 + 1321632532207.

It is an arithmetic number, because the mean of its divisors is an integer number (1321632532207).

Almost surely, 2^{2643265064413} is an apocalyptic number.

It is an amenable number.

2643265064413 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643265064413 is an equidigital number, since it uses as much as digits as its factorization.

2643265064413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 46.

The spelling of 2643265064413 in words is "two trillion, six hundred forty-three billion, two hundred sixty-five million, sixty-four thousand, four hundred thirteen".