12388080040 has 96 divisors (see below), whose sum is σ = 32618920320. Its totient is φ = 4221796992.

The previous prime is 12388079993. The next prime is 12388080041. The reversal of 12388080040 is 4008088321.

It is a junction number, because it is equal to n+sod(n) for n = 12388079978 and 12388080005.

It is not an unprimeable number, because it can be changed into a prime (12388080041) 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, 308397 + ... + 346243.

It is an arithmetic number, because the mean of its divisors is an integer number (339780420).

Almost surely, 2^12388080040 is an apocalyptic number.

12388080040 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 12388080040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16309460160).

12388080040 is an abundant number, since it is smaller than the sum of its proper divisors (20230840280).

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

12388080040 is a wasteful number, since it uses less digits than its factorization.

12388080040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38039 (or 38028 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 12388080040 in words is "twelve billion, three hundred eighty-eight million, eighty thousand, forty".