20145434411 has 2 divisors, whose sum is σ = 20145434412. Its totient is φ = 20145434410.

The previous prime is 20145434359. The next prime is 20145434417. The reversal of 20145434411 is 11443454102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20145434411 - 2¹⁰ = 20145433387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20145434417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072717205 + 10072717206.

It is an arithmetic number, because the mean of its divisors is an integer number (10072717206).

Almost surely, 2^20145434411 is an apocalyptic number.

20145434411 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145434411 is an equidigital number, since it uses as much as digits as its factorization.

20145434411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20145434411 its reverse (11443454102), we get a palindrome (31588888513).

The spelling of 20145434411 in words is "twenty billion, one hundred forty-five million, four hundred thirty-four thousand, four hundred eleven".