12391855248 has 40 divisors (see below), whose sum is σ = 32537092096. Its totient is φ = 4062902400.

The previous prime is 12391855247. The next prime is 12391855253. The reversal of 12391855248 is 84255819321.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 12391855197 and 12391855206.

It is not an unprimeable number, because it can be changed into a prime (12391855247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2113168 + ... + 2119023.

Almost surely, 2^12391855248 is an apocalyptic number.

It is an amenable number.

12391855248 is an abundant number, since it is smaller than the sum of its proper divisors (20145236848).

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

12391855248 is a wasteful number, since it uses less digits than its factorization.

12391855248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232263 (or 4232257 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The spelling of 12391855248 in words is "twelve billion, three hundred ninety-one million, eight hundred fifty-five thousand, two hundred forty-eight".