20620211072 has 64 divisors (see below), whose sum is σ = 41848241760. Its totient is φ = 10118922240.

The previous prime is 20620210973. The next prime is 20620211093. The reversal of 20620211072 is 27011202602.

It is a happy number.

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

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, 1482872 + ... + 1496712.

Almost surely, 2^20620211072 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 20620211072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20924120880).

20620211072 is an abundant number, since it is smaller than the sum of its proper divisors (21228030688).

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

20620211072 is a wasteful number, since it uses less digits than its factorization.

20620211072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14071 (or 14059 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 20620211072 its reverse (27011202602), we get a palindrome (47631413674).

The spelling of 20620211072 in words is "twenty billion, six hundred twenty million, two hundred eleven thousand, seventy-two".