20620327321 has 4 divisors (see below), whose sum is σ = 22494902544. Its totient is φ = 18745752100.

The previous prime is 20620327313. The next prime is 20620327337. The reversal of 20620327321 is 12372302602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20620327321 - 2³ = 20620327313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20620327321.

It is not an unprimeable number, because it can be changed into a prime (20620327421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937287595 + ... + 937287616.

It is an arithmetic number, because the mean of its divisors is an integer number (5623725636).

Almost surely, 2^20620327321 is an apocalyptic number.

It is an amenable number.

20620327321 is a deficient number, since it is larger than the sum of its proper divisors (1874575223).

20620327321 is a wasteful number, since it uses less digits than its factorization.

20620327321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874575222.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 20620327321 its reverse (12372302602), we get a palindrome (32992629923).

The spelling of 20620327321 in words is "twenty billion, six hundred twenty million, three hundred twenty-seven thousand, three hundred twenty-one".