20104442197 has 8 divisors (see below), whose sum is σ = 22994313152. Its totient is φ = 17219023200.

The previous prime is 20104442191. The next prime is 20104442213. The reversal of 20104442197 is 79124440102.

It is a happy number.

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-20104442197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104442191) 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 7 ways as a sum of consecutive naturals, for example, 1103304 + ... + 1121377.

It is an arithmetic number, because the mean of its divisors is an integer number (2874289144).

Almost surely, 2^20104442197 is an apocalyptic number.

It is an amenable number.

20104442197 is a deficient number, since it is larger than the sum of its proper divisors (2889870955).

20104442197 is a wasteful number, since it uses less digits than its factorization.

20104442197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225979.

The product of its (nonzero) digits is 16128, while the sum is 34.

Adding to 20104442197 its reverse (79124440102), we get a palindrome (99228882299).

The spelling of 20104442197 in words is "twenty billion, one hundred four million, four hundred forty-two thousand, one hundred ninety-seven".