15560433440 has 96 divisors (see below), whose sum is σ = 37447038720. Its totient is φ = 6108467200.

The previous prime is 15560433419. The next prime is 15560433563. The reversal of 15560433440 is 4433406551.

It is a self number, because there is not a number n which added to its sum of digits gives 15560433440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8315705 + ... + 8317575.

It is an arithmetic number, because the mean of its divisors is an integer number (390073320).

Almost surely, 2^15560433440 is an apocalyptic number.

15560433440 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 15560433440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18723519360).

15560433440 is an abundant number, since it is smaller than the sum of its proper divisors (21886605280).

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

15560433440 is a wasteful number, since it uses less digits than its factorization.

15560433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 15560433440 its reverse (4433406551), we get a palindrome (19993839991).

The spelling of 15560433440 in words is "fifteen billion, five hundred sixty million, four hundred thirty-three thousand, four hundred forty".