12811499627 has 2 divisors, whose sum is σ = 12811499628. Its totient is φ = 12811499626.

The previous prime is 12811499609. The next prime is 12811499663. The reversal of 12811499627 is 72699411821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72699411821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12811499627 - 2¹² = 12811495531 is a prime.

It is a super-2 number, since 2×12811499627² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12811496627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405749813 + 6405749814.

It is an arithmetic number, because the mean of its divisors is an integer number (6405749814).

Almost surely, 2^12811499627 is an apocalyptic number.

12811499627 is a deficient number, since it is larger than the sum of its proper divisors (1).

12811499627 is an equidigital number, since it uses as much as digits as its factorization.

12811499627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The spelling of 12811499627 in words is "twelve billion, eight hundred eleven million, four hundred ninety-nine thousand, six hundred twenty-seven".