13002323440 has 40 divisors (see below), whose sum is σ = 30967736688. Its totient is φ = 5074076160.

The previous prime is 13002323437. The next prime is 13002323473. The reversal of 13002323440 is 4432320031.

It is a happy number.

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

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, 1978782 + ... + 1985341.

Almost surely, 2^13002323440 is an apocalyptic number.

13002323440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13002323440 is an abundant number, since it is smaller than the sum of its proper divisors (17965413248).

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

13002323440 is a wasteful number, since it uses less digits than its factorization.

13002323440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964177 (or 3964171 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 13002323440 its reverse (4432320031), we get a palindrome (17434643471).

The spelling of 13002323440 in words is "thirteen billion, two million, three hundred twenty-three thousand, four hundred forty".