1287174542047 has 2 divisors, whose sum is σ = 1287174542048. Its totient is φ = 1287174542046.

The previous prime is 1287174542039. The next prime is 1287174542057. The reversal of 1287174542047 is 7402454717821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1287174542047 - 2³ = 1287174542039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1287174541985 and 1287174542003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287174542057) 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, 643587271023 + 643587271024.

It is an arithmetic number, because the mean of its divisors is an integer number (643587271024).

Almost surely, 2^{1287174542047} is an apocalyptic number.

1287174542047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287174542047 is an equidigital number, since it uses as much as digits as its factorization.

1287174542047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3512320, while the sum is 52.

It can be divided in two parts, 128717 and 4542047, that added together give a palindrome (4670764).

The spelling of 1287174542047 in words is "one trillion, two hundred eighty-seven billion, one hundred seventy-four million, five hundred forty-two thousand, forty-seven".