20104345043 has 2 divisors, whose sum is σ = 20104345044. Its totient is φ = 20104345042.

The previous prime is 20104344989. The next prime is 20104345127. The reversal of 20104345043 is 34054340102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20104345043 - 2⁶ = 20104344979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20104345543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052172521 + 10052172522.

It is an arithmetic number, because the mean of its divisors is an integer number (10052172522).

Almost surely, 2^20104345043 is an apocalyptic number.

20104345043 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104345043 is an equidigital number, since it uses as much as digits as its factorization.

20104345043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20104345043 its reverse (34054340102), we get a palindrome (54158685145).

The spelling of 20104345043 in words is "twenty billion, one hundred four million, three hundred forty-five thousand, forty-three".