12587735857 has 2 divisors, whose sum is σ = 12587735858. Its totient is φ = 12587735856.

The previous prime is 12587735843. The next prime is 12587735917. The reversal of 12587735857 is 75853778521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12578968336 + 8767521 = 112156^2 + 2961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12587735857 is a prime.

It is not a weakly prime, because it can be changed into another prime (12587735807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6293867928 + 6293867929.

It is an arithmetic number, because the mean of its divisors is an integer number (6293867929).

Almost surely, 2^12587735857 is an apocalyptic number.

It is an amenable number.

12587735857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12587735857 is an equidigital number, since it uses as much as digits as its factorization.

12587735857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464000, while the sum is 58.

The spelling of 12587735857 in words is "twelve billion, five hundred eighty-seven million, seven hundred thirty-five thousand, eight hundred fifty-seven".