1287145283129 has 2 divisors, whose sum is σ = 1287145283130. Its totient is φ = 1287145283128.

The previous prime is 1287145283119. The next prime is 1287145283159. The reversal of 1287145283129 is 9213825417821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170782428729 + 116362854400 = 1082027^2 + 341120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1287145283129 - 2²⁰ = 1287144234553 is a prime.

It is not a weakly prime, because it can be changed into another prime (1287145283119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643572641564 + 643572641565.

It is an arithmetic number, because the mean of its divisors is an integer number (643572641565).

Almost surely, 2^{1287145283129} is an apocalyptic number.

It is an amenable number.

1287145283129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287145283129 is an equidigital number, since it uses as much as digits as its factorization.

1287145283129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 53.

The spelling of 1287145283129 in words is "one trillion, two hundred eighty-seven billion, one hundred forty-five million, two hundred eighty-three thousand, one hundred twenty-nine".