20983808802 has 16 divisors (see below), whose sum is σ = 45782855712. Its totient is φ = 6358729920.

The previous prime is 20983808789. The next prime is 20983808803. The reversal of 20983808802 is 20880838902.

It is not an unprimeable number, because it can be changed into a prime (20983808803) 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, 158968183 + ... + 158968314.

It is an arithmetic number, because the mean of its divisors is an integer number (2861428482).

Almost surely, 2^20983808802 is an apocalyptic number.

20983808802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20983808802 is an abundant number, since it is smaller than the sum of its proper divisors (24799046910).

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

20983808802 is a wasteful number, since it uses less digits than its factorization.

20983808802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317936513.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 20983808802 in words is "twenty billion, nine hundred eighty-three million, eight hundred eight thousand, eight hundred two".