12628728727 has 8 divisors (see below), whose sum is σ = 13294814000. Its totient is φ = 11962785024.

The previous prime is 12628728713. The next prime is 12628728733. The reversal of 12628728727 is 72782782621.

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

It is a cyclic number.

It is not a de Polignac number, because 12628728727 - 2⁷ = 12628728599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628728787) 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, 182023 + ... + 241639.

It is an arithmetic number, because the mean of its divisors is an integer number (1661851750).

Almost surely, 2^12628728727 is an apocalyptic number.

12628728727 is a deficient number, since it is larger than the sum of its proper divisors (666085273).

12628728727 is a wasteful number, since it uses less digits than its factorization.

12628728727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70785.

The product of its digits is 2107392, while the sum is 52.

The spelling of 12628728727 in words is "twelve billion, six hundred twenty-eight million, seven hundred twenty-eight thousand, seven hundred twenty-seven".