12537471677 has 2 divisors, whose sum is σ = 12537471678. Its totient is φ = 12537471676.

The previous prime is 12537471671. The next prime is 12537471733. The reversal of 12537471677 is 77617473521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7323765241 + 5213706436 = 85579^2 + 72206^2 .

It is a cyclic number.

It is not a de Polignac number, because 12537471677 - 2⁸ = 12537471421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12537471671) 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, 6268735838 + 6268735839.

It is an arithmetic number, because the mean of its divisors is an integer number (6268735839).

Almost surely, 2^12537471677 is an apocalyptic number.

It is an amenable number.

12537471677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12537471677 is an equidigital number, since it uses as much as digits as its factorization.

12537471677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728720, while the sum is 50.

The spelling of 12537471677 in words is "twelve billion, five hundred thirty-seven million, four hundred seventy-one thousand, six hundred seventy-seven".