12512864387 has 2 divisors, whose sum is σ = 12512864388. Its totient is φ = 12512864386.

The previous prime is 12512864347. The next prime is 12512864411. The reversal of 12512864387 is 78346821521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12512864387 - 2¹² = 12512860291 is a prime.

It is not a weakly prime, because it can be changed into another prime (12512864327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256432193 + 6256432194.

It is an arithmetic number, because the mean of its divisors is an integer number (6256432194).

Almost surely, 2^12512864387 is an apocalyptic number.

12512864387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512864387 is an equidigital number, since it uses as much as digits as its factorization.

12512864387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The spelling of 12512864387 in words is "twelve billion, five hundred twelve million, eight hundred sixty-four thousand, three hundred eighty-seven".