20440202992 has 80 divisors (see below), whose sum is σ = 44249167872. Its totient is φ = 9067196160.

The previous prime is 20440202963. The next prime is 20440202999. The reversal of 20440202992 is 29920204402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440202999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032458 + ... + 3039190.

Almost surely, 2^20440202992 is an apocalyptic number.

20440202992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20440202992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22124583936).

20440202992 is an abundant number, since it is smaller than the sum of its proper divisors (23808964880).

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

20440202992 is a wasteful number, since it uses less digits than its factorization.

20440202992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166 (or 7160 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20440202992 in words is "twenty billion, four hundred forty million, two hundred two thousand, nine hundred ninety-two".