12428834857 has 8 divisors (see below), whose sum is σ = 13198764960. Its totient is φ = 11670482880.

The previous prime is 12428834839. The next prime is 12428834879. The reversal of 12428834857 is 75843882421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12428834857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12428834837) 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, 2892319 + ... + 2896612.

It is an arithmetic number, because the mean of its divisors is an integer number (1649845620).

Almost surely, 2^12428834857 is an apocalyptic number.

It is an amenable number.

12428834857 is a deficient number, since it is larger than the sum of its proper divisors (769930103).

12428834857 is a wasteful number, since it uses less digits than its factorization.

12428834857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789063.

The product of its digits is 3440640, while the sum is 52.

The spelling of 12428834857 in words is "twelve billion, four hundred twenty-eight million, eight hundred thirty-four thousand, eight hundred fifty-seven".