12544394280 has 384 divisors, whose sum is σ = 44218137600. Its totient is φ = 2841484800.

The previous prime is 12544394273. The next prime is 12544394293. The reversal of 12544394280 is 8249344521.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 404657865 + ... + 404657895.

It is an arithmetic number, because the mean of its divisors is an integer number (115151400).

Almost surely, 2^12544394280 is an apocalyptic number.

12544394280 is a gapful number since it is divisible by the number (10) 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 12544394280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22109068800).

12544394280 is an abundant number, since it is smaller than the sum of its proper divisors (31673743320).

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

12544394280 is a wasteful number, since it uses less digits than its factorization.

12544394280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 12544394280 in words is "twelve billion, five hundred forty-four million, three hundred ninety-four thousand, two hundred eighty".