12545113344 has 72 divisors (see below), whose sum is σ = 33643438752. Its totient is φ = 4149749760.

The previous prime is 12545113319. The next prime is 12545113381. The reversal of 12545113344 is 44331154521.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38262 + ... + 162954.

Almost surely, 2^12545113344 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 12545113344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16821719376).

12545113344 is an abundant number, since it is smaller than the sum of its proper divisors (21098325408).

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

12545113344 is a wasteful number, since it uses less digits than its factorization.

12545113344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124843 (or 124829 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

Adding to 12545113344 its reverse (44331154521), we get a palindrome (56876267865).

The spelling of 12545113344 in words is "twelve billion, five hundred forty-five million, one hundred thirteen thousand, three hundred forty-four".