13124411440 has 80 divisors (see below), whose sum is σ = 34921479168. Its totient is φ = 4493599488.

The previous prime is 13124411431. The next prime is 13124411497. The reversal of 13124411440 is 4411442131.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400309 + ... + 431851.

Almost surely, 2^13124411440 is an apocalyptic number.

13124411440 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 13124411440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17460739584).

13124411440 is an abundant number, since it is smaller than the sum of its proper divisors (21797067728).

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

13124411440 is a wasteful number, since it uses less digits than its factorization.

13124411440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32306 (or 32300 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 13124411440 its reverse (4411442131), we get a palindrome (17535853571).

The spelling of 13124411440 in words is "thirteen billion, one hundred twenty-four million, four hundred eleven thousand, four hundred forty".