12446717841545 has 8 divisors (see below), whose sum is σ = 16084989210696. Its totient is φ = 9191422406016.

The previous prime is 12446717841539. The next prime is 12446717841553. The reversal of 12446717841545 is 54514871764421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2169634729024 + 10277083112521 = 1472968^2 + 3205789^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12446717841545 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 95743983332 + ... + 95743983461.

It is an arithmetic number, because the mean of its divisors is an integer number (2010623651337).

Almost surely, 2^{12446717841545} is an apocalyptic number.

It is an amenable number.

12446717841545 is a deficient number, since it is larger than the sum of its proper divisors (3638271369151).

12446717841545 is a wasteful number, since it uses less digits than its factorization.

12446717841545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191487966811.

The product of its digits is 30105600, while the sum is 59.

The spelling of 12446717841545 in words is "twelve trillion, four hundred forty-six billion, seven hundred seventeen million, eight hundred forty-one thousand, five hundred forty-five".