12512445677 has 2 divisors, whose sum is σ = 12512445678. Its totient is φ = 12512445676.

The previous prime is 12512445629. The next prime is 12512445683. The reversal of 12512445677 is 77654421521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9080946436 + 3431499241 = 95294^2 + 58579^2 .

It is a cyclic number.

It is not a de Polignac number, because 12512445677 - 2¹⁰ = 12512444653 is a prime.

It is a super-2 number, since 2×12512445677² (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 (12512445977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256222838 + 6256222839.

It is an arithmetic number, because the mean of its divisors is an integer number (6256222839).

Almost surely, 2^12512445677 is an apocalyptic number.

It is an amenable number.

12512445677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512445677 is an equidigital number, since it uses as much as digits as its factorization.

12512445677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 44.

The spelling of 12512445677 in words is "twelve billion, five hundred twelve million, four hundred forty-five thousand, six hundred seventy-seven".