20204145045 has 96 divisors (see below), whose sum is σ = 42185594880. Its totient is φ = 8738513280.

The previous prime is 20204145037. The next prime is 20204145079. The reversal of 20204145045 is 54054140202.

20204145045 is a `hidden beast` number, since 2 + 0 + 204 + 1 + 450 + 4 + 5 = 666.

It is not a de Polignac number, because 20204145045 - 2³ = 20204145037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5785750 + ... + 5789240.

It is an arithmetic number, because the mean of its divisors is an integer number (439433280).

Almost surely, 2^20204145045 is an apocalyptic number.

It is an amenable number.

20204145045 is an abundant number, since it is smaller than the sum of its proper divisors (21981449835).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20204145045 is a wasteful number, since it uses less digits than its factorization.

20204145045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495 (or 4492 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 20204145045 its reverse (54054140202), we get a palindrome (74258285247).

The spelling of 20204145045 in words is "twenty billion, two hundred four million, one hundred forty-five thousand, forty-five".