1680696851711 has 2 divisors, whose sum is σ = 1680696851712. Its totient is φ = 1680696851710.

The previous prime is 1680696851693. The next prime is 1680696851783. The reversal of 1680696851711 is 1171586960861.

It is a weak prime.

It is an emirp because it is prime and its reverse (1171586960861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1680696851711 - 2³⁰ = 1679623109887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680696751711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840348425855 + 840348425856.

It is an arithmetic number, because the mean of its divisors is an integer number (840348425856).

Almost surely, 2^{1680696851711} is an apocalyptic number.

1680696851711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680696851711 is an equidigital number, since it uses as much as digits as its factorization.

1680696851711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 59.

The spelling of 1680696851711 in words is "one trillion, six hundred eighty billion, six hundred ninety-six million, eight hundred fifty-one thousand, seven hundred eleven".