6447594957446 has 4 divisors (see below), whose sum is σ = 9671392436172. Its totient is φ = 3223797478722.

The previous prime is 6447594957409. The next prime is 6447594957449.

6447594957446 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6447594957449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611898739360 + ... + 1611898739363.

It is an arithmetic number, because the mean of its divisors is an integer number (2417848109043).

Almost surely, 2^{6447594957446} is an apocalyptic number.

6447594957446 is a deficient number, since it is larger than the sum of its proper divisors (3223797478726).

6447594957446 is a wasteful number, since it uses less digits than its factorization.

6447594957446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223797478725.

The product of its digits is 3657830400, while the sum is 74.

The spelling of 6447594957446 in words is "six trillion, four hundred forty-seven billion, five hundred ninety-four million, nine hundred fifty-seven thousand, four hundred forty-six".