12642518065 has 8 divisors (see below), whose sum is σ = 15176634048. Its totient is φ = 10110272880.

The previous prime is 12642518041. The next prime is 12642518089. The reversal of 12642518065 is 56081524621.

It is an interprime number because it is at equal distance from previous prime (12642518041) and next prime (12642518089).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12642518065 - 2⁹ = 12642517553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452787 + ... + 479896.

It is an arithmetic number, because the mean of its divisors is an integer number (1897079256).

Almost surely, 2^12642518065 is an apocalyptic number.

It is an amenable number.

12642518065 is a deficient number, since it is larger than the sum of its proper divisors (2534115983).

12642518065 is an equidigital number, since it uses as much as digits as its factorization.

12642518065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935399.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 12642518065 in words is "twelve billion, six hundred forty-two million, five hundred eighteen thousand, sixty-five".