12345403452 has 12 divisors (see below), whose sum is σ = 28805941416. Its totient is φ = 4115134480.

The previous prime is 12345403429. The next prime is 12345403457. The reversal of 12345403452 is 25430454321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12345403457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514391799 + ... + 514391822.

It is an arithmetic number, because the mean of its divisors is an integer number (2400495118).

Almost surely, 2^12345403452 is an apocalyptic number.

12345403452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12345403452 is an abundant number, since it is smaller than the sum of its proper divisors (16460537964).

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

12345403452 is a wasteful number, since it uses less digits than its factorization.

12345403452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028783628 (or 1028783626 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 12345403452 its reverse (25430454321), we get a palindrome (37775857773).

The spelling of 12345403452 in words is "twelve billion, three hundred forty-five million, four hundred three thousand, four hundred fifty-two".