197871742067 has 4 divisors (see below), whose sum is σ = 198759059520. Its totient is φ = 196984424616.

The previous prime is 197871742039. The next prime is 197871742153. The reversal of 197871742067 is 760247178791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 760247178791 = 149 ⋅5102330059.

It is a cyclic number.

It is not a de Polignac number, because 197871742067 - 2¹² = 197871737971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197871741997 and 197871742015.

It is not an unprimeable number, because it can be changed into a prime (197871747067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443658392 + ... + 443658837.

It is an arithmetic number, because the mean of its divisors is an integer number (49689764880).

Almost surely, 2^197871742067 is an apocalyptic number.

197871742067 is a deficient number, since it is larger than the sum of its proper divisors (887317453).

197871742067 is an equidigital number, since it uses as much as digits as its factorization.

197871742067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887317452.

The product of its (nonzero) digits is 8297856, while the sum is 59.

The spelling of 197871742067 in words is "one hundred ninety-seven billion, eight hundred seventy-one million, seven hundred forty-two thousand, sixty-seven".