12447007540 has 48 divisors (see below), whose sum is σ = 30015760320. Its totient is φ = 4287962880.

The previous prime is 12447007523. The next prime is 12447007541. The reversal of 12447007540 is 4570074421.

It is a happy number.

12447007540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12447007496 and 12447007505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12447007541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484697 + ... + 1493056.

It is an arithmetic number, because the mean of its divisors is an integer number (625328340).

Almost surely, 2^12447007540 is an apocalyptic number.

12447007540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12447007540 is an abundant number, since it is smaller than the sum of its proper divisors (17568752780).

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

12447007540 is a wasteful number, since it uses less digits than its factorization.

12447007540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2977792 (or 2977790 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The spelling of 12447007540 in words is "twelve billion, four hundred forty-seven million, seven thousand, five hundred forty".