12447016540 has 24 divisors (see below), whose sum is σ = 29872840032. Its totient is φ = 4267548480.

The previous prime is 12447016537. The next prime is 12447016541. The reversal of 12447016540 is 4561074421.

It is a junction number, because it is equal to n+sod(n) for n = 12447016496 and 12447016505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12447016541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44453491 + ... + 44453770.

It is an arithmetic number, because the mean of its divisors is an integer number (1244701668).

Almost surely, 2^12447016540 is an apocalyptic number.

12447016540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12447016540 is an abundant number, since it is smaller than the sum of its proper divisors (17425823492).

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

12447016540 is a wasteful number, since it uses less digits than its factorization.

12447016540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88907277 (or 88907275 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 12447016540 in words is "twelve billion, four hundred forty-seven million, sixteen thousand, five hundred forty".