12581144432 has 10 divisors (see below), whose sum is σ = 24375967368. Its totient is φ = 6290572208.

The previous prime is 12581144419. The next prime is 12581144437. The reversal of 12581144432 is 23444118521.

It is a junction number, because it is equal to n+sod(n) for n = 12581144392 and 12581144401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12581144437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393160748 + ... + 393160779.

Almost surely, 2^12581144432 is an apocalyptic number.

It is an amenable number.

12581144432 is a deficient number, since it is larger than the sum of its proper divisors (11794822936).

12581144432 is an equidigital number, since it uses as much as digits as its factorization.

12581144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786321535 (or 786321529 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The spelling of 12581144432 in words is "twelve billion, five hundred eighty-one million, one hundred forty-four thousand, four hundred thirty-two".