20442300000 has 144 divisors (see below), whose sum is σ = 67072988304. Its totient is φ = 5451200000.

The previous prime is 20442299971. The next prime is 20442300007. The reversal of 20442300000 is 324402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442300007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265930 + ... + 334070.

It is an arithmetic number, because the mean of its divisors is an integer number (465784641).

Almost surely, 2^20442300000 is an apocalyptic number.

20442300000 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 20442300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33536494152).

20442300000 is an abundant number, since it is smaller than the sum of its proper divisors (46630688304).

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

20442300000 is an frugal number, since it uses more digits than its factorization.

20442300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68179 (or 68151 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20442300000 its reverse (324402), we get a palindrome (20442624402).

The spelling of 20442300000 in words is "twenty billion, four hundred forty-two million, three hundred thousand".