1681006448839 has 2 divisors, whose sum is σ = 1681006448840. Its totient is φ = 1681006448838.

The previous prime is 1681006448831. The next prime is 1681006448851. The reversal of 1681006448839 is 9388446001861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1681006448839 - 2³ = 1681006448831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681006448831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840503224419 + 840503224420.

It is an arithmetic number, because the mean of its divisors is an integer number (840503224420).

Almost surely, 2^{1681006448839} is an apocalyptic number.

1681006448839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681006448839 is an equidigital number, since it uses as much as digits as its factorization.

1681006448839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 1681006448839 in words is "one trillion, six hundred eighty-one billion, six million, four hundred forty-eight thousand, eight hundred thirty-nine".