197111636342518 has 8 divisors (see below), whose sum is σ = 296404779837960. Its totient is φ = 98310043063200.

The previous prime is 197111636342477. The next prime is 197111636342519. The reversal of 197111636342518 is 815243636111791.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197111636342519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122887553028 + ... + 122887554631.

It is an arithmetic number, because the mean of its divisors is an integer number (37050597479745).

Almost surely, 2^{197111636342518} is an apocalyptic number.

197111636342518 is a deficient number, since it is larger than the sum of its proper divisors (99293143495442).

197111636342518 is a wasteful number, since it uses less digits than its factorization.

197111636342518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245775108062.

The product of its digits is 6531840, while the sum is 58.

The spelling of 197111636342518 in words is "one hundred ninety-seven trillion, one hundred eleven billion, six hundred thirty-six million, three hundred forty-two thousand, five hundred eighteen".