1609340726687 has 2 divisors, whose sum is σ = 1609340726688. Its totient is φ = 1609340726686.

The previous prime is 1609340726603. The next prime is 1609340726713. The reversal of 1609340726687 is 7866270439061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1609340726687 - 2⁸ = 1609340726431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1609340726387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804670363343 + 804670363344.

It is an arithmetic number, because the mean of its divisors is an integer number (804670363344).

Almost surely, 2^{1609340726687} is an apocalyptic number.

1609340726687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1609340726687 is an equidigital number, since it uses as much as digits as its factorization.

1609340726687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 1609340726687 in words is "one trillion, six hundred nine billion, three hundred forty million, seven hundred twenty-six thousand, six hundred eighty-seven".