1287574487543 has 2 divisors, whose sum is σ = 1287574487544. Its totient is φ = 1287574487542.

The previous prime is 1287574487531. The next prime is 1287574487579. The reversal of 1287574487543 is 3457844757821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1287574487543 - 2³² = 1283279520247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1287574487543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287574487593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643787243771 + 643787243772.

It is an arithmetic number, because the mean of its divisors is an integer number (643787243772).

Almost surely, 2^{1287574487543} is an apocalyptic number.

1287574487543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287574487543 is an equidigital number, since it uses as much as digits as its factorization.

1287574487543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210739200, while the sum is 65.

The spelling of 1287574487543 in words is "one trillion, two hundred eighty-seven billion, five hundred seventy-four million, four hundred eighty-seven thousand, five hundred forty-three".