12545374666527 has 12 divisors (see below), whose sum is σ = 18186515865960. Its totient is φ = 8333389668528.

The previous prime is 12545374666481. The next prime is 12545374666579. The reversal of 12545374666527 is 72566647354521.

It is a happy number.

It is not a de Polignac number, because 12545374666527 - 2¹⁰ = 12545374665503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545374666597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2516117577 + ... + 2516122562.

It is an arithmetic number, because the mean of its divisors is an integer number (1515542988830).

Almost surely, 2^{12545374666527} is an apocalyptic number.

12545374666527 is a deficient number, since it is larger than the sum of its proper divisors (5641141199433).

12545374666527 is a wasteful number, since it uses less digits than its factorization.

12545374666527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032240422 (or 5032240419 counting only the distinct ones).

The product of its digits is 254016000, while the sum is 63.

The spelling of 12545374666527 in words is "twelve trillion, five hundred forty-five billion, three hundred seventy-four million, six hundred sixty-six thousand, five hundred twenty-seven".