12868351857 has 12 divisors (see below), whose sum is σ = 19395777024. Its totient is φ = 8205905400.

The previous prime is 12868351849. The next prime is 12868351879. The reversal of 12868351857 is 75815386821.

12868351857 is a `hidden beast` number, since 1 + 286 + 8 + 351 + 8 + 5 + 7 = 666.

It is not a de Polignac number, because 12868351857 - 2³ = 12868351849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12868351357) 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, 31082769 + ... + 31083182.

It is an arithmetic number, because the mean of its divisors is an integer number (1616314752).

Almost surely, 2^12868351857 is an apocalyptic number.

It is an amenable number.

12868351857 is a deficient number, since it is larger than the sum of its proper divisors (6527425167).

12868351857 is a wasteful number, since it uses less digits than its factorization.

12868351857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62165980 (or 62165977 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 12868351857 in words is "twelve billion, eight hundred sixty-eight million, three hundred fifty-one thousand, eight hundred fifty-seven".