1291541967587 has 2 divisors, whose sum is σ = 1291541967588. Its totient is φ = 1291541967586.

The previous prime is 1291541967581. The next prime is 1291541967629. The reversal of 1291541967587 is 7857691451921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1291541967587 - 2⁶ = 1291541967523 is a prime.

It is not a weakly prime, because it can be changed into another prime (1291541967581) 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, 645770983793 + 645770983794.

It is an arithmetic number, because the mean of its divisors is an integer number (645770983794).

Almost surely, 2^{1291541967587} is an apocalyptic number.

1291541967587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291541967587 is an equidigital number, since it uses as much as digits as its factorization.

1291541967587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 65.

The spelling of 1291541967587 in words is "one trillion, two hundred ninety-one billion, five hundred forty-one million, nine hundred sixty-seven thousand, five hundred eighty-seven".