20444250000 has 140 divisors (see below), whose sum is σ = 66019467440. Its totient is φ = 5451600000.

The previous prime is 20444249981. The next prime is 20444250011. The reversal of 20444250000 is 5244402.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 736371 + ... + 763629.

Almost surely, 2^20444250000 is an apocalyptic number.

20444250000 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 20444250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33009733720).

20444250000 is an abundant number, since it is smaller than the sum of its proper divisors (45575217440).

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

20444250000 is an frugal number, since it uses more digits than its factorization.

20444250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27300 (or 27269 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

Adding to 20444250000 its reverse (5244402), we get a palindrome (20449494402).

The spelling of 20444250000 in words is "twenty billion, four hundred forty-four million, two hundred fifty thousand".