12648897689591 has 2 divisors, whose sum is σ = 12648897689592. Its totient is φ = 12648897689590.

The previous prime is 12648897689587. The next prime is 12648897689609. The reversal of 12648897689591 is 19598679884621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12648897689591 - 2² = 12648897689587 is a prime.

It is a super-2 number, since 2×12648897689591² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12648897689501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324448844795 + 6324448844796.

It is an arithmetic number, because the mean of its divisors is an integer number (6324448844796).

Almost surely, 2^{12648897689591} is an apocalyptic number.

12648897689591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12648897689591 is an equidigital number, since it uses as much as digits as its factorization.

12648897689591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3762339840, while the sum is 83.

The spelling of 12648897689591 in words is "twelve trillion, six hundred forty-eight billion, eight hundred ninety-seven million, six hundred eighty-nine thousand, five hundred ninety-one".