12611267677 has 2 divisors, whose sum is σ = 12611267678. Its totient is φ = 12611267676.

The previous prime is 12611267663. The next prime is 12611267681. The reversal of 12611267677 is 77676211621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12569548996 + 41718681 = 112114^2 + 6459^2 .

It is a cyclic number.

It is not a de Polignac number, because 12611267677 - 2¹⁹ = 12610743389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12611267657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305633838 + 6305633839.

It is an arithmetic number, because the mean of its divisors is an integer number (6305633839).

Almost surely, 2^12611267677 is an apocalyptic number.

It is an amenable number.

12611267677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611267677 is an equidigital number, since it uses as much as digits as its factorization.

12611267677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The spelling of 12611267677 in words is "twelve billion, six hundred eleven million, two hundred sixty-seven thousand, six hundred seventy-seven".