1340445352487 has 2 divisors, whose sum is σ = 1340445352488. Its totient is φ = 1340445352486.

The previous prime is 1340445352471. The next prime is 1340445352517. The reversal of 1340445352487 is 7842535440431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340445352487 - 2⁴ = 1340445352471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340445352187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670222676243 + 670222676244.

It is an arithmetic number, because the mean of its divisors is an integer number (670222676244).

Almost surely, 2^{1340445352487} is an apocalyptic number.

1340445352487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340445352487 is an equidigital number, since it uses as much as digits as its factorization.

1340445352487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 50.

The spelling of 1340445352487 in words is "one trillion, three hundred forty billion, four hundred forty-five million, three hundred fifty-two thousand, four hundred eighty-seven".