1691100168103 has 2 divisors, whose sum is σ = 1691100168104. Its totient is φ = 1691100168102.

The previous prime is 1691100168089. The next prime is 1691100168253. The reversal of 1691100168103 is 3018610011961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1691100168103 - 2¹⁷ = 1691100037031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1691100169103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845550084051 + 845550084052.

It is an arithmetic number, because the mean of its divisors is an integer number (845550084052).

Almost surely, 2^{1691100168103} is an apocalyptic number.

1691100168103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1691100168103 is an equidigital number, since it uses as much as digits as its factorization.

1691100168103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 1691100168103 in words is "one trillion, six hundred ninety-one billion, one hundred million, one hundred sixty-eight thousand, one hundred three".