12636424831 has 2 divisors, whose sum is σ = 12636424832. Its totient is φ = 12636424830.

The previous prime is 12636424811. The next prime is 12636424847. The reversal of 12636424831 is 13842463621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12636424831 - 2¹¹ = 12636422783 is a prime.

It is a super-2 number, since 2×12636424831² (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 (12636424811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318212415 + 6318212416.

It is an arithmetic number, because the mean of its divisors is an integer number (6318212416).

Almost surely, 2^12636424831 is an apocalyptic number.

12636424831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636424831 is an equidigital number, since it uses as much as digits as its factorization.

12636424831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The spelling of 12636424831 in words is "twelve billion, six hundred thirty-six million, four hundred twenty-four thousand, eight hundred thirty-one".