12693888265 has 16 divisors (see below), whose sum is σ = 15767672400. Its totient is φ = 9798872832.

The previous prime is 12693888227. The next prime is 12693888299. The reversal of 12693888265 is 56288839621.

It can be written as a sum of positive squares in 8 ways, for example, as 105945849 + 12587942416 = 10293^2 + 112196^2 .

It is a cyclic number.

It is not a de Polignac number, because 12693888265 - 2⁹ = 12693887753 is a prime.

It is a super-2 number, since 2×12693888265² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215779 + ... + 268231.

It is an arithmetic number, because the mean of its divisors is an integer number (985479525).

Almost surely, 2^12693888265 is an apocalyptic number.

It is an amenable number.

12693888265 is a deficient number, since it is larger than the sum of its proper divisors (3073784135).

12693888265 is a wasteful number, since it uses less digits than its factorization.

12693888265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54156.

The product of its digits is 9953280, while the sum is 58.

The spelling of 12693888265 in words is "twelve billion, six hundred ninety-three million, eight hundred eighty-eight thousand, two hundred sixty-five".