1686633697043 has 2 divisors, whose sum is σ = 1686633697044. Its totient is φ = 1686633697042.

The previous prime is 1686633696997. The next prime is 1686633697057. The reversal of 1686633697043 is 3407963366861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686633697043 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1686633690043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843316848521 + 843316848522.

It is an arithmetic number, because the mean of its divisors is an integer number (843316848522).

Almost surely, 2^{1686633697043} is an apocalyptic number.

1686633697043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686633697043 is an equidigital number, since it uses as much as digits as its factorization.

1686633697043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70543872, while the sum is 62.

The spelling of 1686633697043 in words is "one trillion, six hundred eighty-six billion, six hundred thirty-three million, six hundred ninety-seven thousand, forty-three".