12811499663 has 2 divisors, whose sum is σ = 12811499664. Its totient is φ = 12811499662.

The previous prime is 12811499627. The next prime is 12811499681. The reversal of 12811499663 is 36699411821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12811499663 is a prime.

It is a super-2 number, since 2×12811499663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12811499963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405749831 + 6405749832.

It is an arithmetic number, because the mean of its divisors is an integer number (6405749832).

Almost surely, 2^12811499663 is an apocalyptic number.

12811499663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12811499663 is an equidigital number, since it uses as much as digits as its factorization.

12811499663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The spelling of 12811499663 in words is "twelve billion, eight hundred eleven million, four hundred ninety-nine thousand, six hundred sixty-three".