20104404149 has 2 divisors, whose sum is σ = 20104404150. Its totient is φ = 20104404148.

The previous prime is 20104404097. The next prime is 20104404157. The reversal of 20104404149 is 94140440102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20104404100 + 49 = 141790^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104404149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104404179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052202074 + 10052202075.

It is an arithmetic number, because the mean of its divisors is an integer number (10052202075).

Almost surely, 2^20104404149 is an apocalyptic number.

It is an amenable number.

20104404149 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104404149 is an equidigital number, since it uses as much as digits as its factorization.

20104404149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

It can be divided in two parts, 201044041 and 49, that multiplied together give a square (9851158009 = 99253²).

The spelling of 20104404149 in words is "twenty billion, one hundred four million, four hundred four thousand, one hundred forty-nine".