12611372771 has 2 divisors, whose sum is σ = 12611372772. Its totient is φ = 12611372770.

The previous prime is 12611372747. The next prime is 12611372783. The reversal of 12611372771 is 17727311621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12611372771 is a prime.

It is not a weakly prime, because it can be changed into another prime (12611372791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305686385 + 6305686386.

It is an arithmetic number, because the mean of its divisors is an integer number (6305686386).

Almost surely, 2^12611372771 is an apocalyptic number.

12611372771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611372771 is an equidigital number, since it uses as much as digits as its factorization.

12611372771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24696, while the sum is 38.

The spelling of 12611372771 in words is "twelve billion, six hundred eleven million, three hundred seventy-two thousand, seven hundred seventy-one".