1686471380351 has 2 divisors, whose sum is σ = 1686471380352. Its totient is φ = 1686471380350.

The previous prime is 1686471380323. The next prime is 1686471380401. The reversal of 1686471380351 is 1530831746861.

It is a weak prime.

It is an emirp because it is prime and its reverse (1530831746861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1686471380351 - 2³⁰ = 1685397638527 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1686471380293 and 1686471380302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686471386351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843235690175 + 843235690176.

It is an arithmetic number, because the mean of its divisors is an integer number (843235690176).

Almost surely, 2^{1686471380351} is an apocalyptic number.

1686471380351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686471380351 is an equidigital number, since it uses as much as digits as its factorization.

1686471380351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 1686471380351 in words is "one trillion, six hundred eighty-six billion, four hundred seventy-one million, three hundred eighty thousand, three hundred fifty-one".