197241639643 has 8 divisors (see below), whose sum is σ = 199481163200. Its totient is φ = 195009933888.

The previous prime is 197241639641. The next prime is 197241639703. The reversal of 197241639643 is 346936142791.

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

It is a cyclic number.

It is not a de Polignac number, because 197241639643 - 2¹ = 197241639641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197241639641) 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, 1903698 + ... + 2004631.

It is an arithmetic number, because the mean of its divisors is an integer number (24935145400).

Almost surely, 2^197241639643 is an apocalyptic number.

197241639643 is a deficient number, since it is larger than the sum of its proper divisors (2239523557).

197241639643 is a wasteful number, since it uses less digits than its factorization.

197241639643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3908901.

The product of its digits is 5878656, while the sum is 55.

The spelling of 197241639643 in words is "one hundred ninety-seven billion, two hundred forty-one million, six hundred thirty-nine thousand, six hundred forty-three".