20545335045 has 16 divisors (see below), whose sum is σ = 36525040320. Its totient is φ = 10957511952.

The previous prime is 20545335011. The next prime is 20545335047. The reversal of 20545335045 is 54053354502.

20545335045 is a `hidden beast` number, since 20 + 54 + 533 + 50 + 4 + 5 = 666.

It is not a de Polignac number, because 20545335045 - 2⁷ = 20545334917 is a prime.

It is a super-2 number, since 2×20545335045² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20545335047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76093699 + ... + 76093968.

It is an arithmetic number, because the mean of its divisors is an integer number (2282815020).

Almost surely, 2^20545335045 is an apocalyptic number.

It is an amenable number.

20545335045 is a deficient number, since it is larger than the sum of its proper divisors (15979705275).

20545335045 is a wasteful number, since it uses less digits than its factorization.

20545335045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152187681 (or 152187675 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

Adding to 20545335045 its reverse (54053354502), we get a palindrome (74598689547).

The spelling of 20545335045 in words is "twenty billion, five hundred forty-five million, three hundred thirty-five thousand, forty-five".