20065130172 has 72 divisors (see below), whose sum is σ = 52988906880. Its totient is φ = 6389903520.

The previous prime is 20065130159. The next prime is 20065130191. The reversal of 20065130172 is 27103156002.

It is a happy number.

20065130172 is a `hidden beast` number, since 2 + 0 + 0 + 651 + 3 + 0 + 1 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 697147 + ... + 725357.

It is an arithmetic number, because the mean of its divisors is an integer number (735957040).

Almost surely, 2^20065130172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20065130172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26494453440).

20065130172 is an abundant number, since it is smaller than the sum of its proper divisors (32923776708).

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

20065130172 is a wasteful number, since it uses less digits than its factorization.

20065130172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29103 (or 29098 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 20065130172 its reverse (27103156002), we get a palindrome (47168286174).

The spelling of 20065130172 in words is "twenty billion, sixty-five million, one hundred thirty thousand, one hundred seventy-two".