20045110745 has 16 divisors (see below), whose sum is σ = 26266697280. Its totient is φ = 14563915200.

The previous prime is 20045110739. The next prime is 20045110777. The reversal of 20045110745 is 54701154002.

It is a de Polignac number, because none of the positive numbers 2^k-20045110745 is a prime.

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, 122786 + ... + 234875.

It is an arithmetic number, because the mean of its divisors is an integer number (1641668580).

Almost surely, 2^20045110745 is an apocalyptic number.

It is an amenable number.

20045110745 is a deficient number, since it is larger than the sum of its proper divisors (6221586535).

20045110745 is a wasteful number, since it uses less digits than its factorization.

20045110745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358696.

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 20045110745 its reverse (54701154002), we get a palindrome (74746264747).

The spelling of 20045110745 in words is "twenty billion, forty-five million, one hundred ten thousand, seven hundred forty-five".