12544111320 has 64 divisors (see below), whose sum is σ = 40527133920. Its totient is φ = 3087780864.

The previous prime is 12544111303. The next prime is 12544111331. The reversal of 12544111320 is 2311144521.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4018989 + ... + 4022108.

Almost surely, 2^12544111320 is an apocalyptic number.

12544111320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12544111320 is an abundant number, since it is smaller than the sum of its proper divisors (27983022600).

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

12544111320 is a wasteful number, since it uses less digits than its factorization.

12544111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8041124 (or 8041120 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 12544111320 its reverse (2311144521), we get a palindrome (14855255841).

The spelling of 12544111320 in words is "twelve billion, five hundred forty-four million, one hundred eleven thousand, three hundred twenty".