20320209983 has 8 divisors (see below), whose sum is σ = 20389885152. Its totient is φ = 20250590976.

The previous prime is 20320209967. The next prime is 20320209991. The reversal of 20320209983 is 38990202302.

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 20320209983 - 2⁴ = 20320209967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320209583) 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, 788366 + ... + 813732.

It is an arithmetic number, because the mean of its divisors is an integer number (2548735644).

Almost surely, 2^20320209983 is an apocalyptic number.

20320209983 is a deficient number, since it is larger than the sum of its proper divisors (69675169).

20320209983 is a wasteful number, since it uses less digits than its factorization.

20320209983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28081.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 20320209983 in words is "twenty billion, three hundred twenty million, two hundred nine thousand, nine hundred eighty-three".