12667607129 has 2 divisors, whose sum is σ = 12667607130. Its totient is φ = 12667607128.

The previous prime is 12667607093. The next prime is 12667607149. The reversal of 12667607129 is 92170676621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12571567129 + 96040000 = 112123^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 12667607129 - 2⁸ = 12667606873 is a prime.

It is not a weakly prime, because it can be changed into another prime (12667607149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333803564 + 6333803565.

It is an arithmetic number, because the mean of its divisors is an integer number (6333803565).

Almost surely, 2^12667607129 is an apocalyptic number.

It is an amenable number.

12667607129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667607129 is an equidigital number, since it uses as much as digits as its factorization.

12667607129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 12667607129 in words is "twelve billion, six hundred sixty-seven million, six hundred seven thousand, one hundred twenty-nine".