12748566571 has 16 divisors (see below), whose sum is σ = 13941784864. Its totient is φ = 11585908224.

The previous prime is 12748566503. The next prime is 12748566581. The reversal of 12748566571 is 17566584721.

It is a cyclic number.

It is not a de Polignac number, because 12748566571 - 2⁷ = 12748566443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12748566581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2433571 + ... + 2438803.

It is an arithmetic number, because the mean of its divisors is an integer number (871361554).

Almost surely, 2^12748566571 is an apocalyptic number.

12748566571 is a deficient number, since it is larger than the sum of its proper divisors (1193218293).

12748566571 is a wasteful number, since it uses less digits than its factorization.

12748566571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110.

The product of its digits is 2822400, while the sum is 52.

The spelling of 12748566571 in words is "twelve billion, seven hundred forty-eight million, five hundred sixty-six thousand, five hundred seventy-one".