12537659657377 has 2 divisors, whose sum is σ = 12537659657378. Its totient is φ = 12537659657376.

The previous prime is 12537659657333. The next prime is 12537659657389. The reversal of 12537659657377 is 77375695673521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8707403590561 + 3830256066816 = 2950831^2 + 1957104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12537659657377 is a prime.

It is not a weakly prime, because it can be changed into another prime (12537659657477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6268829828688 + 6268829828689.

It is an arithmetic number, because the mean of its divisors is an integer number (6268829828689).

Almost surely, 2^{12537659657377} is an apocalyptic number.

It is an amenable number.

12537659657377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12537659657377 is an equidigital number, since it uses as much as digits as its factorization.

12537659657377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1750329000, while the sum is 73.

The spelling of 12537659657377 in words is "twelve trillion, five hundred thirty-seven billion, six hundred fifty-nine million, six hundred fifty-seven thousand, three hundred seventy-seven".