20134411444 has 60 divisors (see below), whose sum is σ = 41530998404. Its totient is φ = 8539679232.

The previous prime is 20134411417. The next prime is 20134411447. The reversal of 20134411444 is 44411443102.

It can be written as a sum of positive squares in 2 ways, for example, as 16607476900 + 3526934544 = 128870^2 + 59388^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134411447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 920782 + ... + 942394.

Almost surely, 2^20134411444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20134411444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20765499202).

20134411444 is an abundant number, since it is smaller than the sum of its proper divisors (21396586960).

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

20134411444 is an equidigital number, since it uses as much as digits as its factorization.

20134411444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21742 (or 21719 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20134411444 its reverse (44411443102), we get a palindrome (64545854546).

The spelling of 20134411444 in words is "twenty billion, one hundred thirty-four million, four hundred eleven thousand, four hundred forty-four".