13204140440 has 32 divisors (see below), whose sum is σ = 31272966000. Its totient is φ = 5003673984.

The previous prime is 13204140437. The next prime is 13204140461. The reversal of 13204140440 is 4404140231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8686175 + ... + 8687694.

Almost surely, 2^13204140440 is an apocalyptic number.

13204140440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13204140440 is an abundant number, since it is smaller than the sum of its proper divisors (18068825560).

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

13204140440 is a wasteful number, since it uses less digits than its factorization.

13204140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17373899 (or 17373895 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 13204140440 its reverse (4404140231), we get a palindrome (17608280671).

The spelling of 13204140440 in words is "thirteen billion, two hundred four million, one hundred forty thousand, four hundred forty".