12447536146 has 8 divisors (see below), whose sum is σ = 18682913340. Its totient is φ = 6219898368.

The previous prime is 12447536141. The next prime is 12447536161. The reversal of 12447536146 is 64163574421.

12447536146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12313231225 + 134304921 = 110965^2 + 11589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12447536146² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12447536141) 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 3 ways as a sum of consecutive naturals, for example, 1930831 + ... + 1937266.

Almost surely, 2^12447536146 is an apocalyptic number.

12447536146 is a deficient number, since it is larger than the sum of its proper divisors (6235377194).

12447536146 is a wasteful number, since it uses less digits than its factorization.

12447536146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869708.

The product of its digits is 483840, while the sum is 43.

The spelling of 12447536146 in words is "twelve billion, four hundred forty-seven million, five hundred thirty-six thousand, one hundred forty-six".