6447646467446 has 4 divisors (see below), whose sum is σ = 9671469701172. Its totient is φ = 3223823233722.

The previous prime is 6447646467443. The next prime is 6447646467497.

6447646467446 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 (6447646467443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611911616860 + ... + 1611911616863.

It is an arithmetic number, because the mean of its divisors is an integer number (2417867425293).

Almost surely, 2^{6447646467446} is an apocalyptic number.

6447646467446 is a deficient number, since it is larger than the sum of its proper divisors (3223823233726).

6447646467446 is a wasteful number, since it uses less digits than its factorization.

6447646467446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223823233725.

The product of its digits is 1560674304, while the sum is 68.

The spelling of 6447646467446 in words is "six trillion, four hundred forty-seven billion, six hundred forty-six million, four hundred sixty-seven thousand, four hundred forty-six".