20045322545 has 16 divisors (see below), whose sum is σ = 24458626512. Its totient is φ = 15766978560.

The previous prime is 20045322533. The next prime is 20045322559. The reversal of 20045322545 is 54522354002.

It can be written as a sum of positive squares in 8 ways, for example, as 2072434576 + 17972887969 = 45524^2 + 134063^2 .

It is not a de Polignac number, because 20045322545 - 2²⁶ = 19978213681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 827729 + ... + 851601.

It is an arithmetic number, because the mean of its divisors is an integer number (1528664157).

Almost surely, 2^20045322545 is an apocalyptic number.

It is an amenable number.

20045322545 is a deficient number, since it is larger than the sum of its proper divisors (4413303967).

20045322545 is a wasteful number, since it uses less digits than its factorization.

20045322545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26692.

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 20045322545 its reverse (54522354002), we get a palindrome (74567676547).

The spelling of 20045322545 in words is "twenty billion, forty-five million, three hundred twenty-two thousand, five hundred forty-five".