1686461660263 has 2 divisors, whose sum is σ = 1686461660264. Its totient is φ = 1686461660262.

The previous prime is 1686461660203. The next prime is 1686461660269. The reversal of 1686461660263 is 3620661646861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686461660263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686461660269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843230830131 + 843230830132.

It is an arithmetic number, because the mean of its divisors is an integer number (843230830132).

Almost surely, 2^{1686461660263} is an apocalyptic number.

1686461660263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686461660263 is an equidigital number, since it uses as much as digits as its factorization.

1686461660263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 1686461660263 in words is "one trillion, six hundred eighty-six billion, four hundred sixty-one million, six hundred sixty thousand, two hundred sixty-three".