6442678762446 has 16 divisors (see below), whose sum is σ = 12959839362384. Its totient is φ = 2135145947904.

The previous prime is 6442678762391. The next prime is 6442678762447.

6442678762446 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442678762447) 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 in 7 ways as a sum of consecutive naturals, for example, 3103408771 + ... + 3103410846.

It is an arithmetic number, because the mean of its divisors is an integer number (809989960149).

Almost surely, 2^{6442678762446} is an apocalyptic number.

6442678762446 is an abundant number, since it is smaller than the sum of its proper divisors (6517160599938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6442678762446 is a wasteful number, since it uses less digits than its factorization.

6442678762446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6206819795.

The product of its digits is 520224768, while the sum is 66.

The spelling of 6442678762446 in words is "six trillion, four hundred forty-two billion, six hundred seventy-eight million, seven hundred sixty-two thousand, four hundred forty-six".