20444131000 has 64 divisors (see below), whose sum is σ = 48103997760. Its totient is φ = 8132400000.

The previous prime is 20444130991. The next prime is 20444131021. The reversal of 20444131000 is 13144402.

It is a super-2 number, since 2×20444131000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124525 + ... + 237475.

It is an arithmetic number, because the mean of its divisors is an integer number (751624965).

Almost surely, 2^20444131000 is an apocalyptic number.

20444131000 is a gapful number since it is divisible by the number (20) 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 20444131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24051998880).

20444131000 is an abundant number, since it is smaller than the sum of its proper divisors (27659866760).

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

20444131000 is a wasteful number, since it uses less digits than its factorization.

20444131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113153 (or 113139 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20444131000 its reverse (13144402), we get a palindrome (20457275402).

The spelling of 20444131000 in words is "twenty billion, four hundred forty-four million, one hundred thirty-one thousand".