20104441993 has 2 divisors, whose sum is σ = 20104441994. Its totient is φ = 20104441992.

The previous prime is 20104441969. The next prime is 20104442021. The reversal of 20104441993 is 39914440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14764194064 + 5340247929 = 121508^2 + 73077^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104441993 - 2³³ = 11514507401 is a prime.

It is not a weakly prime, because it can be changed into another prime (20104441913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052220996 + 10052220997.

It is an arithmetic number, because the mean of its divisors is an integer number (10052220997).

Almost surely, 2^20104441993 is an apocalyptic number.

It is an amenable number.

20104441993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104441993 is an equidigital number, since it uses as much as digits as its factorization.

20104441993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20104441993 in words is "twenty billion, one hundred four million, four hundred forty-one thousand, nine hundred ninety-three".