20345201023522 has 16 divisors (see below), whose sum is σ = 30527399642040. Its totient is φ = 10169401658112.

The previous prime is 20345201023519. The next prime is 20345201023547. The reversal of 20345201023522 is 22532010254302.

It can be written as a sum of positive squares in 4 ways, for example, as 12257428125721 + 8087772897801 = 3501061^2 + 2843901^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83009868 + ... + 83254600.

Almost surely, 2^{20345201023522} is an apocalyptic number.

20345201023522 is a deficient number, since it is larger than the sum of its proper divisors (10182198618518).

20345201023522 is a wasteful number, since it uses less digits than its factorization.

20345201023522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257637.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 20345201023522 its reverse (22532010254302), we get a palindrome (42877211277824).

The spelling of 20345201023522 in words is "twenty trillion, three hundred forty-five billion, two hundred one million, twenty-three thousand, five hundred twenty-two".