1659343707667 has 2 divisors, whose sum is σ = 1659343707668. Its totient is φ = 1659343707666.

The previous prime is 1659343707559. The next prime is 1659343707739. The reversal of 1659343707667 is 7667073439561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1659343707667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1659343707599 and 1659343707608.

It is not a weakly prime, because it can be changed into another prime (1659343707767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829671853833 + 829671853834.

It is an arithmetic number, because the mean of its divisors is an integer number (829671853834).

Almost surely, 2^{1659343707667} is an apocalyptic number.

1659343707667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659343707667 is an equidigital number, since it uses as much as digits as its factorization.

1659343707667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120022560, while the sum is 64.

The spelling of 1659343707667 in words is "one trillion, six hundred fifty-nine billion, three hundred forty-three million, seven hundred seven thousand, six hundred sixty-seven".