1287862726853 has 2 divisors, whose sum is σ = 1287862726854. Its totient is φ = 1287862726852.

The previous prime is 1287862726837. The next prime is 1287862726873. The reversal of 1287862726853 is 3586272687821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252391524609 + 35471202244 = 1119103^2 + 188338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1287862726853 - 2⁴ = 1287862726837 is a prime.

It is a super-3 number, since 3×1287862726853³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1287862726853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287862726873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643931363426 + 643931363427.

It is an arithmetic number, because the mean of its divisors is an integer number (643931363427).

Almost surely, 2^{1287862726853} is an apocalyptic number.

It is an amenable number.

1287862726853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287862726853 is an equidigital number, since it uses as much as digits as its factorization.

1287862726853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108380160, while the sum is 65.

The spelling of 1287862726853 in words is "one trillion, two hundred eighty-seven billion, eight hundred sixty-two million, seven hundred twenty-six thousand, eight hundred fifty-three".