20065031296 has 64 divisors (see below), whose sum is σ = 40398120000. Its totient is φ = 9926470656.

The previous prime is 20065031267. The next prime is 20065031309. The reversal of 20065031296 is 69213056002.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4893055 + ... + 4897153.

It is an arithmetic number, because the mean of its divisors is an integer number (631220625).

Almost surely, 2^20065031296 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 20065031296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20199060000).

20065031296 is an abundant number, since it is smaller than the sum of its proper divisors (20333088704).

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

20065031296 is a wasteful number, since it uses less digits than its factorization.

20065031296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 20065031296 its reverse (69213056002), we get a palindrome (89278087298).

The spelling of 20065031296 in words is "twenty billion, sixty-five million, thirty-one thousand, two hundred ninety-six".