20045122132 has 48 divisors (see below), whose sum is σ = 43655472000. Its totient is φ = 7857972864.

The previous prime is 20045122091. The next prime is 20045122177. The reversal of 20045122132 is 23122154002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634207 + ... + 665062.

It is an arithmetic number, because the mean of its divisors is an integer number (909489000).

Almost surely, 2^20045122132 is an apocalyptic number.

It is an amenable number.

20045122132 is an abundant number, since it is smaller than the sum of its proper divisors (23610349868).

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

20045122132 is a wasteful number, since it uses less digits than its factorization.

20045122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299328 (or 1299326 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20045122132 its reverse (23122154002), we get a palindrome (43167276134).

The spelling of 20045122132 in words is "twenty billion, forty-five million, one hundred twenty-two thousand, one hundred thirty-two".