20045213329 has 2 divisors, whose sum is σ = 20045213330. Its totient is φ = 20045213328.

The previous prime is 20045213311. The next prime is 20045213333. The reversal of 20045213329 is 92331254002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20044046929 + 1166400 = 141577^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 20045213329 - 2⁵ = 20045213297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20045213329.

It is not a weakly prime, because it can be changed into another prime (20045213029) 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, 10022606664 + 10022606665.

It is an arithmetic number, because the mean of its divisors is an integer number (10022606665).

Almost surely, 2^20045213329 is an apocalyptic number.

It is an amenable number.

20045213329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045213329 is an equidigital number, since it uses as much as digits as its factorization.

20045213329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 20045213329 in words is "twenty billion, forty-five million, two hundred thirteen thousand, three hundred twenty-nine".