13005234452 has 72 divisors (see below), whose sum is σ = 27911052288. Its totient is φ = 5278996800.

The previous prime is 13005234443. The next prime is 13005234457. The reversal of 13005234452 is 25443250031.

It is a happy number.

It is a super-2 number, since 2×13005234452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005234457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262802 + ... + 308342.

It is an arithmetic number, because the mean of its divisors is an integer number (387653504).

Almost surely, 2^13005234452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13005234452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13955526144).

13005234452 is an abundant number, since it is smaller than the sum of its proper divisors (14905817836).

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

13005234452 is a wasteful number, since it uses less digits than its factorization.

13005234452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45637 (or 45628 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 13005234452 its reverse (25443250031), we get a palindrome (38448484483).

The spelling of 13005234452 in words is "thirteen billion, five million, two hundred thirty-four thousand, four hundred fifty-two".