12540397763 has 2 divisors, whose sum is σ = 12540397764. Its totient is φ = 12540397762.

The previous prime is 12540397739. The next prime is 12540397811. The reversal of 12540397763 is 36779304521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12540397763 - 2¹⁶ = 12540332227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12540397733) 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, 6270198881 + 6270198882.

It is an arithmetic number, because the mean of its divisors is an integer number (6270198882).

Almost surely, 2^12540397763 is an apocalyptic number.

12540397763 is a deficient number, since it is larger than the sum of its proper divisors (1).

12540397763 is an equidigital number, since it uses as much as digits as its factorization.

12540397763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 12540397763 in words is "twelve billion, five hundred forty million, three hundred ninety-seven thousand, seven hundred sixty-three".