20789475321 has 8 divisors (see below), whose sum is σ = 29349847584. Its totient is φ = 13044376640.

The previous prime is 20789475319. The next prime is 20789475341. The reversal of 20789475321 is 12357498702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20789475321 - 2¹ = 20789475319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20789475341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203818335 + ... + 203818436.

It is an arithmetic number, because the mean of its divisors is an integer number (3668730948).

Almost surely, 2^20789475321 is an apocalyptic number.

It is an amenable number.

20789475321 is a deficient number, since it is larger than the sum of its proper divisors (8560372263).

20789475321 is a wasteful number, since it uses less digits than its factorization.

20789475321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407636791.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 20789475321 in words is "twenty billion, seven hundred eighty-nine million, four hundred seventy-five thousand, three hundred twenty-one".