12381097248 has 144 divisors (see below), whose sum is σ = 39565955520. Its totient is φ = 3643909632.

The previous prime is 12381097241. The next prime is 12381097279. The reversal of 12381097248 is 84279018321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12381097241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14223 + ... + 158001.

It is an arithmetic number, because the mean of its divisors is an integer number (274763580).

Almost surely, 2^12381097248 is an apocalyptic number.

12381097248 is a gapful number since it is divisible by the number (18) 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 12381097248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19782977760).

12381097248 is an abundant number, since it is smaller than the sum of its proper divisors (27184858272).

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

12381097248 is a wasteful number, since it uses less digits than its factorization.

12381097248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143831 (or 143820 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 12381097248 in words is "twelve billion, three hundred eighty-one million, ninety-seven thousand, two hundred forty-eight".