13203020440 has 32 divisors (see below), whose sum is σ = 29738450160. Its totient is φ = 5275580800.

The previous prime is 13203020431. The next prime is 13203020473. The reversal of 13203020440 is 4402030231.

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, 137746 + ... + 213025.

Almost surely, 2^13203020440 is an apocalyptic number.

13203020440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203020440 is an abundant number, since it is smaller than the sum of its proper divisors (16535429720).

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

13203020440 is a wasteful number, since it uses less digits than its factorization.

13203020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351723 (or 351719 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 13203020440 its reverse (4402030231), we get a palindrome (17605050671).

The spelling of 13203020440 in words is "thirteen billion, two hundred three million, twenty thousand, four hundred forty".