12435873372 has 72 divisors (see below), whose sum is σ = 33891692016. Its totient is φ = 3822073344.

The previous prime is 12435873349. The next prime is 12435873379. The reversal of 12435873372 is 27337853421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12435873379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409828 + ... + 439124.

Almost surely, 2^12435873372 is an apocalyptic number.

12435873372 is a gapful number since it is divisible by the number (12) 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 12435873372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16945846008).

12435873372 is an abundant number, since it is smaller than the sum of its proper divisors (21455818644).

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

12435873372 is a wasteful number, since it uses less digits than its factorization.

12435873372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30227 (or 30222 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 12435873372 in words is "twelve billion, four hundred thirty-five million, eight hundred seventy-three thousand, three hundred seventy-two".