13143440000 has 160 divisors (see below), whose sum is σ = 34445848800. Its totient is φ = 4980096000.

The previous prime is 13143439997. The next prime is 13143440003. The reversal of 13143440000 is 4434131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13143439997) and next prime (13143440003).

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13143440003) 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, 1515677 + ... + 1524323.

It is an arithmetic number, because the mean of its divisors is an integer number (215286555).

Almost surely, 2^13143440000 is an apocalyptic number.

13143440000 is a gapful number since it is divisible by the number (10) 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 13143440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17222924400).

13143440000 is an abundant number, since it is smaller than the sum of its proper divisors (21302408800).

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

13143440000 is an frugal number, since it uses more digits than its factorization.

13143440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8700 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13143440000 its reverse (4434131), we get a palindrome (13147874131).

The spelling of 13143440000 in words is "thirteen billion, one hundred forty-three million, four hundred forty thousand".