12990687630439 has 2 divisors, whose sum is σ = 12990687630440. Its totient is φ = 12990687630438.

The previous prime is 12990687630301. The next prime is 12990687630443. The reversal of 12990687630439 is 93403678609921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12990687630439 is a prime.

It is a super-2 number, since 2×12990687630439² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12990687636439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6495343815219 + 6495343815220.

It is an arithmetic number, because the mean of its divisors is an integer number (6495343815220).

Almost surely, 2^{12990687630439} is an apocalyptic number.

12990687630439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12990687630439 is an equidigital number, since it uses as much as digits as its factorization.

12990687630439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105815808, while the sum is 67.

The spelling of 12990687630439 in words is "twelve trillion, nine hundred ninety billion, six hundred eighty-seven million, six hundred thirty thousand, four hundred thirty-nine".