20104443097 has 4 divisors (see below), whose sum is σ = 20156125860. Its totient is φ = 20052760336.

The previous prime is 20104443043. The next prime is 20104443101. The reversal of 20104443097 is 79034440102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13345794576 + 6758648521 = 115524^2 + 82211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104443097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20104443397) 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, 25840798 + ... + 25841575.

It is an arithmetic number, because the mean of its divisors is an integer number (5039031465).

Almost surely, 2^20104443097 is an apocalyptic number.

It is an amenable number.

20104443097 is a deficient number, since it is larger than the sum of its proper divisors (51682763).

20104443097 is an equidigital number, since it uses as much as digits as its factorization.

20104443097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51682762.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 20104443097 its reverse (79034440102), we get a palindrome (99138883199).

The spelling of 20104443097 in words is "twenty billion, one hundred four million, four hundred forty-three thousand, ninety-seven".