20104144939 has 2 divisors, whose sum is σ = 20104144940. Its totient is φ = 20104144938.

The previous prime is 20104144901. The next prime is 20104144943. The reversal of 20104144939 is 93944140102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104144939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20104144898 and 20104144907.

It is not a weakly prime, because it can be changed into another prime (20104144969) 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 as a sum of consecutive naturals, namely, 10052072469 + 10052072470.

It is an arithmetic number, because the mean of its divisors is an integer number (10052072470).

Almost surely, 2^20104144939 is an apocalyptic number.

20104144939 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104144939 is an equidigital number, since it uses as much as digits as its factorization.

20104144939 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 20104144939 in words is "twenty billion, one hundred four million, one hundred forty-four thousand, nine hundred thirty-nine".