1287841237387 has 2 divisors, whose sum is σ = 1287841237388. Its totient is φ = 1287841237386.

The previous prime is 1287841237379. The next prime is 1287841237391. The reversal of 1287841237387 is 7837321487821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287841237387 - 2³ = 1287841237379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1287841247387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643920618693 + 643920618694.

It is an arithmetic number, because the mean of its divisors is an integer number (643920618694).

Almost surely, 2^{1287841237387} is an apocalyptic number.

1287841237387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287841237387 is an equidigital number, since it uses as much as digits as its factorization.

1287841237387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25288704, while the sum is 61.

The spelling of 1287841237387 in words is "one trillion, two hundred eighty-seven billion, eight hundred forty-one million, two hundred thirty-seven thousand, three hundred eighty-seven".