12628877889 has 8 divisors (see below), whose sum is σ = 16839022912. Its totient is φ = 8418992400.

The previous prime is 12628877887. The next prime is 12628877897. The reversal of 12628877889 is 98877882621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12628877889 - 2¹ = 12628877887 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12628877887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161439 + ... + 226539.

It is an arithmetic number, because the mean of its divisors is an integer number (2104877864).

Almost surely, 2^12628877889 is an apocalyptic number.

It is an amenable number.

12628877889 is a deficient number, since it is larger than the sum of its proper divisors (4210145023).

12628877889 is an equidigital number, since it uses as much as digits as its factorization.

12628877889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129767.

The product of its digits is 43352064, while the sum is 66.

The spelling of 12628877889 in words is "twelve billion, six hundred twenty-eight million, eight hundred seventy-seven thousand, eight hundred eighty-nine".