12781970459 has 2 divisors, whose sum is σ = 12781970460. Its totient is φ = 12781970458.

The previous prime is 12781970417. The next prime is 12781970473. The reversal of 12781970459 is 95407918721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12781970459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12781970459.

It is not a weakly prime, because it can be changed into another prime (12781970959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6390985229 + 6390985230.

It is an arithmetic number, because the mean of its divisors is an integer number (6390985230).

Almost surely, 2^12781970459 is an apocalyptic number.

12781970459 is a deficient number, since it is larger than the sum of its proper divisors (1).

12781970459 is an equidigital number, since it uses as much as digits as its factorization.

12781970459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 12781970459 in words is "twelve billion, seven hundred eighty-one million, nine hundred seventy thousand, four hundred fifty-nine".