12145563659 has 2 divisors, whose sum is σ = 12145563660. Its totient is φ = 12145563658.

The previous prime is 12145563587. The next prime is 12145563671. The reversal of 12145563659 is 95636554121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12145563659 - 2²⁰ = 12144515083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12145563359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072781829 + 6072781830.

It is an arithmetic number, because the mean of its divisors is an integer number (6072781830).

Almost surely, 2^12145563659 is an apocalyptic number.

12145563659 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145563659 is an equidigital number, since it uses as much as digits as its factorization.

12145563659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972000, while the sum is 47.

The spelling of 12145563659 in words is "twelve billion, one hundred forty-five million, five hundred sixty-three thousand, six hundred fifty-nine".