2646263968993 has 2 divisors, whose sum is σ = 2646263968994. Its totient is φ = 2646263968992.

The previous prime is 2646263968991. The next prime is 2646263969029. The reversal of 2646263968993 is 3998693626462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2627991147664 + 18272821329 = 1621108^2 + 135177^2 .

It is a cyclic number.

It is not a de Polignac number, because 2646263968993 - 2¹ = 2646263968991 is a prime.

Together with 2646263968991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2646263968991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323131984496 + 1323131984497.

It is an arithmetic number, because the mean of its divisors is an integer number (1323131984497).

Almost surely, 2^{2646263968993} is an apocalyptic number.

It is an amenable number.

2646263968993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646263968993 is an equidigital number, since it uses as much as digits as its factorization.

2646263968993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088391168, while the sum is 73.

The spelling of 2646263968993 in words is "two trillion, six hundred forty-six billion, two hundred sixty-three million, nine hundred sixty-eight thousand, nine hundred ninety-three".