20201209983 has 12 divisors (see below), whose sum is σ = 29858119720. Its totient is φ = 13154276016.

The previous prime is 20201209981. The next prime is 20201210033. The reversal of 20201209983 is 38990210202.

It is not a de Polignac number, because 20201209983 - 2¹ = 20201209981 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 (20201209981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26099368 + ... + 26100141.

Almost surely, 2^20201209983 is an apocalyptic number.

20201209983 is a deficient number, since it is larger than the sum of its proper divisors (9656909737).

20201209983 is a wasteful number, since it uses less digits than its factorization.

20201209983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52199558 (or 52199555 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 20201209983 in words is "twenty billion, two hundred one million, two hundred nine thousand, nine hundred eighty-three".