12643069365 has 24 divisors (see below), whose sum is σ = 21918405600. Its totient is φ = 6741815904.

The previous prime is 12643069343. The next prime is 12643069391. The reversal of 12643069365 is 56396034621.

12643069365 is a `hidden beast` number, since 126 + 430 + 6 + 93 + 6 + 5 = 666.

It is not a de Polignac number, because 12643069365 - 2⁷ = 12643069237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12643069365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285486 + ... + 326784.

It is an arithmetic number, because the mean of its divisors is an integer number (913266900).

Almost surely, 2^12643069365 is an apocalyptic number.

12643069365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12643069365 is a deficient number, since it is larger than the sum of its proper divisors (9275336235).

12643069365 is a wasteful number, since it uses less digits than its factorization.

12643069365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48113 (or 48110 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 12643069365 in words is "twelve billion, six hundred forty-three million, sixty-nine thousand, three hundred sixty-five".