1686800676137 has 2 divisors, whose sum is σ = 1686800676138. Its totient is φ = 1686800676136.

The previous prime is 1686800676047. The next prime is 1686800676151. The reversal of 1686800676137 is 7316760086861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1660415222041 + 26385454096 = 1288571^2 + 162436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1686800676137 - 2¹⁶ = 1686800610601 is a prime.

It is a super-2 number, since 2×1686800676137² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1686800676167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843400338068 + 843400338069.

It is an arithmetic number, because the mean of its divisors is an integer number (843400338069).

Almost surely, 2^{1686800676137} is an apocalyptic number.

It is an amenable number.

1686800676137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686800676137 is an equidigital number, since it uses as much as digits as its factorization.

1686800676137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 1686800676137 in words is "one trillion, six hundred eighty-six billion, eight hundred million, six hundred seventy-six thousand, one hundred thirty-seven".