196658806491743 has 2 divisors, whose sum is σ = 196658806491744. Its totient is φ = 196658806491742.

The previous prime is 196658806491713. The next prime is 196658806491821. The reversal of 196658806491743 is 347194608856691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196658806491743 - 2²⁸ = 196658538056287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196658806491713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98329403245871 + 98329403245872.

It is an arithmetic number, because the mean of its divisors is an integer number (98329403245872).

Almost surely, 2^{196658806491743} is an apocalyptic number.

196658806491743 is a deficient number, since it is larger than the sum of its proper divisors (1).

196658806491743 is an equidigital number, since it uses as much as digits as its factorization.

196658806491743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1881169920, while the sum is 77.

The spelling of 196658806491743 in words is "one hundred ninety-six trillion, six hundred fifty-eight billion, eight hundred six million, four hundred ninety-one thousand, seven hundred forty-three".