13021440340 has 96 divisors (see below), whose sum is σ = 29426664960. Its totient is φ = 4827373056.

The previous prime is 13021440329. The next prime is 13021440401. The reversal of 13021440340 is 4304412031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4474806 + ... + 4477714.

It is an arithmetic number, because the mean of its divisors is an integer number (306527760).

Almost surely, 2^13021440340 is an apocalyptic number.

13021440340 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 13021440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14713332480).

13021440340 is an abundant number, since it is smaller than the sum of its proper divisors (16405224620).

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

13021440340 is a wasteful number, since it uses less digits than its factorization.

13021440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13021440340 its reverse (4304412031), we get a palindrome (17325852371).

The spelling of 13021440340 in words is "thirteen billion, twenty-one million, four hundred forty thousand, three hundred forty".