12628775293 has 4 divisors (see below), whose sum is σ = 12638665980. Its totient is φ = 12618884608.

The previous prime is 12628775231. The next prime is 12628775321. The reversal of 12628775293 is 39257782621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5910841924 + 6717933369 = 76882^2 + 81963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12628775293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12628775293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628775693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4943428 + ... + 4945981.

It is an arithmetic number, because the mean of its divisors is an integer number (3159666495).

Almost surely, 2^12628775293 is an apocalyptic number.

It is an amenable number.

12628775293 is a deficient number, since it is larger than the sum of its proper divisors (9890687).

12628775293 is an equidigital number, since it uses as much as digits as its factorization.

12628775293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890686.

The product of its digits is 2540160, while the sum is 52.

The spelling of 12628775293 in words is "twelve billion, six hundred twenty-eight million, seven hundred seventy-five thousand, two hundred ninety-three".