63780535052791 has 2 divisors, whose sum is σ = 63780535052792. Its totient is φ = 63780535052790.

The previous prime is 63780535052777. The next prime is 63780535052807. The reversal of 63780535052791 is 19725053508736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63780535052791 - 2²⁵ = 63780501498359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63780535052711) 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, 31890267526395 + 31890267526396.

It is an arithmetic number, because the mean of its divisors is an integer number (31890267526396).

Almost surely, 2^{63780535052791} is an apocalyptic number.

63780535052791 is a deficient number, since it is larger than the sum of its proper divisors (1).

63780535052791 is an equidigital number, since it uses as much as digits as its factorization.

63780535052791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 63780535052791 in words is "sixty-three trillion, seven hundred eighty billion, five hundred thirty-five million, fifty-two thousand, seven hundred ninety-one".