1693840680001 has 2 divisors, whose sum is σ = 1693840680002. Its totient is φ = 1693840680000.

The previous prime is 1693840679933. The next prime is 1693840680013. The reversal of 1693840680001 is 1000860483961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1483779791025 + 210060888976 = 1218105^2 + 458324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1693840680001 is a prime.

It is a super-3 number, since 3×1693840680001³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1693840680031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846920340000 + 846920340001.

It is an arithmetic number, because the mean of its divisors is an integer number (846920340001).

Almost surely, 2^{1693840680001} is an apocalyptic number.

It is an amenable number.

1693840680001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693840680001 is an equidigital number, since it uses as much as digits as its factorization.

1693840680001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 1693840680001 in words is "one trillion, six hundred ninety-three billion, eight hundred forty million, six hundred eighty thousand, one".