12527909617 has 2 divisors, whose sum is σ = 12527909618. Its totient is φ = 12527909616.

The previous prime is 12527909593. The next prime is 12527909621. The reversal of 12527909617 is 71690972521.

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., 9524979216 + 3002930401 = 97596^2 + 54799^2 .

It is a cyclic number.

It is not a de Polignac number, because 12527909617 - 2¹⁹ = 12527385329 is a prime.

It is not a weakly prime, because it can be changed into another prime (12527909687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6263954808 + 6263954809.

It is an arithmetic number, because the mean of its divisors is an integer number (6263954809).

Almost surely, 2^12527909617 is an apocalyptic number.

It is an amenable number.

12527909617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12527909617 is an equidigital number, since it uses as much as digits as its factorization.

12527909617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 12527909617 in words is "twelve billion, five hundred twenty-seven million, nine hundred nine thousand, six hundred seventeen".