12660207631 has 2 divisors, whose sum is σ = 12660207632. Its totient is φ = 12660207630.

The previous prime is 12660207629. The next prime is 12660207733. The reversal of 12660207631 is 13670206621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12660207631 - 2¹ = 12660207629 is a prime.

It is a super-2 number, since 2×12660207631² (a number of 21 digits) contains 22 as substring.

Together with 12660207629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12660204631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330103815 + 6330103816.

It is an arithmetic number, because the mean of its divisors is an integer number (6330103816).

Almost surely, 2^12660207631 is an apocalyptic number.

12660207631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12660207631 is an equidigital number, since it uses as much as digits as its factorization.

12660207631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 12660207631 in words is "twelve billion, six hundred sixty million, two hundred seven thousand, six hundred thirty-one".