196742043717 has 4 divisors (see below), whose sum is σ = 262322724960. Its totient is φ = 131161362476.

The previous prime is 196742043713. The next prime is 196742043739. The reversal of 196742043717 is 717340247691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 717340247691 = 3 ⋅239113415897.

It is a cyclic number.

It is not a de Polignac number, because 196742043717 - 2² = 196742043713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196742043717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196742043713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32790340617 + ... + 32790340622.

It is an arithmetic number, because the mean of its divisors is an integer number (65580681240).

Almost surely, 2^196742043717 is an apocalyptic number.

It is an amenable number.

196742043717 is a deficient number, since it is larger than the sum of its proper divisors (65580681243).

196742043717 is an equidigital number, since it uses as much as digits as its factorization.

196742043717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65580681242.

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 196742043717 in words is "one hundred ninety-six billion, seven hundred forty-two million, forty-three thousand, seven hundred seventeen".