12841990065 has 12 divisors (see below), whose sum is σ = 22259449524. Its totient is φ = 6849061344.

The previous prime is 12841990061. The next prime is 12841990069. The reversal of 12841990065 is 56009914821.

It is an interprime number because it is at equal distance from previous prime (12841990061) and next prime (12841990069).

It can be written as a sum of positive squares in 2 ways, for example, as 9422196624 + 3419793441 = 97068^2 + 58479^2 .

It is not a de Polignac number, because 12841990065 - 2² = 12841990061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 285377557 = 12841990065 / (1 + 2 + 8 + 4 + 1 + 9 + 9 + 0 + 0 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12841990065.

It is not an unprimeable number, because it can be changed into a prime (12841990061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142688734 + ... + 142688823.

It is an arithmetic number, because the mean of its divisors is an integer number (1854954127).

Almost surely, 2^12841990065 is an apocalyptic number.

12841990065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12841990065 is a deficient number, since it is larger than the sum of its proper divisors (9417459459).

12841990065 is a wasteful number, since it uses less digits than its factorization.

12841990065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285377568 (or 285377565 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 12841990065 in words is "twelve billion, eight hundred forty-one million, nine hundred ninety thousand, sixty-five".