12645305697 has 16 divisors (see below), whose sum is σ = 17465827328. Its totient is φ = 8129417040.

The previous prime is 12645305683. The next prime is 12645305741. The reversal of 12645305697 is 79650354621.

It is not a de Polignac number, because 12645305697 - 2⁶ = 12645305633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12645325697) 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, 213913 + ... + 266550.

It is an arithmetic number, because the mean of its divisors is an integer number (1091614208).

Almost surely, 2^12645305697 is an apocalyptic number.

It is an amenable number.

12645305697 is a deficient number, since it is larger than the sum of its proper divisors (4820521631).

12645305697 is a wasteful number, since it uses less digits than its factorization.

12645305697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480780.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 12645305697 in words is "twelve billion, six hundred forty-five million, three hundred five thousand, six hundred ninety-seven".