13512034440 has 192 divisors, whose sum is σ = 46772631360. Its totient is φ = 3505731840.

The previous prime is 13512034399. The next prime is 13512034441. The reversal of 13512034440 is 4443021531.

It is a happy number.

13512034440 is a `hidden beast` number, since 13 + 5 + 1 + 203 + 4 + 440 = 666.

It is a super-2 number, since 2×13512034440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13512034441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340855 + ... + 378425.

It is an arithmetic number, because the mean of its divisors is an integer number (243607455).

Almost surely, 2^13512034440 is an apocalyptic number.

13512034440 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 13512034440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23386315680).

13512034440 is an abundant number, since it is smaller than the sum of its proper divisors (33260596920).

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

13512034440 is a wasteful number, since it uses less digits than its factorization.

13512034440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37634 (or 37618 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 13512034440 its reverse (4443021531), we get a palindrome (17955055971).

The spelling of 13512034440 in words is "thirteen billion, five hundred twelve million, thirty-four thousand, four hundred forty".