15401440000 has 90 divisors (see below), whose sum is σ = 38416499660. Its totient is φ = 6160512000.

The previous prime is 15401439997. The next prime is 15401440001. The reversal of 15401440000 is 4410451.

It is a self number, because there is not a number n which added to its sum of digits gives 15401440000.

It is not an unprimeable number, because it can be changed into a prime (15401440001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111871 + ... + 208129.

Almost surely, 2^15401440000 is an apocalyptic number.

15401440000 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 15401440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19208249830).

15401440000 is an abundant number, since it is smaller than the sum of its proper divisors (23015059660).

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

15401440000 is an frugal number, since it uses more digits than its factorization.

15401440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96295 (or 96266 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 15401440000 its reverse (4410451), we get a palindrome (15405850451).

The spelling of 15401440000 in words is "fifteen billion, four hundred one million, four hundred forty thousand".