1287916836863 has 4 divisors (see below), whose sum is σ = 1355701933560. Its totient is φ = 1220131740168.

The previous prime is 1287916836851. The next prime is 1287916836893. The reversal of 1287916836863 is 3686386197821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1287916836863 - 2¹⁶ = 1287916771327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1287916836793 and 1287916836802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287916836893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33892548320 + ... + 33892548357.

It is an arithmetic number, because the mean of its divisors is an integer number (338925483390).

Almost surely, 2^{1287916836863} is an apocalyptic number.

1287916836863 is a deficient number, since it is larger than the sum of its proper divisors (67785096697).

1287916836863 is an equidigital number, since it uses as much as digits as its factorization.

1287916836863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67785096696.

The product of its digits is 125411328, while the sum is 68.

The spelling of 1287916836863 in words is "one trillion, two hundred eighty-seven billion, nine hundred sixteen million, eight hundred thirty-six thousand, eight hundred sixty-three".