15641450000 has 120 divisors (see below), whose sum is σ = 41324230080. Its totient is φ = 5687600000.

The previous prime is 15641449997. The next prime is 15641450039. The reversal of 15641450000 is 5414651.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535781 + ... + 564219.

It is an arithmetic number, because the mean of its divisors is an integer number (344368584).

Almost surely, 2^15641450000 is an apocalyptic number.

15641450000 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 15641450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20662115040).

15641450000 is an abundant number, since it is smaller than the sum of its proper divisors (25682780080).

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

15641450000 is an equidigital number, since it uses as much as digits as its factorization.

15641450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28483 (or 28457 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 15641450000 its reverse (5414651), we get a palindrome (15646864651).

The spelling of 15641450000 in words is "fifteen billion, six hundred forty-one million, four hundred fifty thousand".