20061097792 has 56 divisors (see below), whose sum is σ = 42264290376. Its totient is φ = 9415016448.

The previous prime is 20061097733. The next prime is 20061097841. The reversal of 20061097792 is 29779016002.

It can be written as a sum of positive squares in 4 ways, for example, as 7324621056 + 12736476736 = 85584^2 + 112856^2 .

It is a congruent number.

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, 381108 + ... + 430540.

It is an arithmetic number, because the mean of its divisors is an integer number (754719471).

Almost surely, 2^20061097792 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 20061097792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21132145188).

20061097792 is an abundant number, since it is smaller than the sum of its proper divisors (22203192584).

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

20061097792 is a wasteful number, since it uses less digits than its factorization.

20061097792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49835 (or 49825 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 20061097792 in words is "twenty billion, sixty-one million, ninety-seven thousand, seven hundred ninety-two".