1340474373647 has 2 divisors, whose sum is σ = 1340474373648. Its totient is φ = 1340474373646.

The previous prime is 1340474373629. The next prime is 1340474373653. The reversal of 1340474373647 is 7463734740431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1340474373647 - 2¹⁰ = 1340474372623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340474373607) 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, 670237186823 + 670237186824.

It is an arithmetic number, because the mean of its divisors is an integer number (670237186824).

Almost surely, 2^{1340474373647} is an apocalyptic number.

1340474373647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340474373647 is an equidigital number, since it uses as much as digits as its factorization.

1340474373647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 53.

The spelling of 1340474373647 in words is "one trillion, three hundred forty billion, four hundred seventy-four million, three hundred seventy-three thousand, six hundred forty-seven".