12424433652 has 18 divisors (see below), whose sum is σ = 31406207378. Its totient is φ = 4141477872.

The previous prime is 12424433599. The next prime is 12424433653. The reversal of 12424433652 is 25633442421.

It can be written as a sum of positive squares in only one way, i.e., 7163252496 + 5261181156 = 84636^2 + 72534^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 345123157 = 12424433652 / (1 + 2 + 4 + 2 + 4 + 4 + 3 + 3 + 6 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12424433653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172561543 + ... + 172561614.

Almost surely, 2^12424433652 is an apocalyptic number.

12424433652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12424433652 is an abundant number, since it is smaller than the sum of its proper divisors (18981773726).

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

12424433652 is a wasteful number, since it uses less digits than its factorization.

12424433652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345123167 (or 345123162 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The spelling of 12424433652 in words is "twelve billion, four hundred twenty-four million, four hundred thirty-three thousand, six hundred fifty-two".