12446515444 has 18 divisors (see below), whose sum is σ = 23941542002. Its totient is φ = 5657506800.

The previous prime is 12446515391. The next prime is 12446515447. The reversal of 12446515444 is 44451564421.

It can be written as a sum of positive squares in only one way, i.e., 12446079844 + 435600 = 111562^2 + 660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12446515397 and 12446515406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446515447) 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 5 ways as a sum of consecutive naturals, for example, 12857487 + ... + 12858454.

Almost surely, 2^12446515444 is an apocalyptic number.

It is an amenable number.

12446515444 is a deficient number, since it is larger than the sum of its proper divisors (11495026558).

12446515444 is a wasteful number, since it uses less digits than its factorization.

12446515444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25715967 (or 25715954 counting only the distinct ones).

The product of its digits is 307200, while the sum is 40.

The spelling of 12446515444 in words is "twelve billion, four hundred forty-six million, five hundred fifteen thousand, four hundred forty-four".