1287471404591 has 2 divisors, whose sum is σ = 1287471404592. Its totient is φ = 1287471404590.

The previous prime is 1287471404563. The next prime is 1287471404803. The reversal of 1287471404591 is 1954041747821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1287471404591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287471409591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643735702295 + 643735702296.

It is an arithmetic number, because the mean of its divisors is an integer number (643735702296).

Almost surely, 2^{1287471404591} is an apocalyptic number.

1287471404591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287471404591 is an equidigital number, since it uses as much as digits as its factorization.

1287471404591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 1287471404591 in words is "one trillion, two hundred eighty-seven billion, four hundred seventy-one million, four hundred four thousand, five hundred ninety-one".