13325403440 has 40 divisors (see below), whose sum is σ = 31737218688. Its totient is φ = 5200156160.

The previous prime is 13325403439. The next prime is 13325403449. The reversal of 13325403440 is 4430452331.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (13325403449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028032 + ... + 2034591.

Almost surely, 2^13325403440 is an apocalyptic number.

13325403440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13325403440 is an abundant number, since it is smaller than the sum of its proper divisors (18411815248).

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

13325403440 is a wasteful number, since it uses less digits than its factorization.

13325403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062677 (or 4062671 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 13325403440 its reverse (4430452331), we get a palindrome (17755855771).

The spelling of 13325403440 in words is "thirteen billion, three hundred twenty-five million, four hundred three thousand, four hundred forty".