196658806491793 has 8 divisors (see below), whose sum is σ = 196961083155648. Its totient is φ = 196356533237904.

The previous prime is 196658806491743. The next prime is 196658806491821. The reversal of 196658806491793 is 397194608856691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196658806491793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196658806491713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129996180 + ... + 131500282.

It is an arithmetic number, because the mean of its divisors is an integer number (24620135394456).

Almost surely, 2^{196658806491793} is an apocalyptic number.

It is an amenable number.

196658806491793 is a deficient number, since it is larger than the sum of its proper divisors (302276663855).

196658806491793 is a wasteful number, since it uses less digits than its factorization.

196658806491793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704983.

The product of its (nonzero) digits is 4232632320, while the sum is 82.

The spelling of 196658806491793 in words is "one hundred ninety-six trillion, six hundred fifty-eight billion, eight hundred six million, four hundred ninety-one thousand, seven hundred ninety-three".