6388440448836 has 48 divisors (see below), whose sum is σ = 15388634257920. Its totient is φ = 2060596680960.

The previous prime is 6388440448813. The next prime is 6388440448837.

6388440448836 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6388440448837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3262150 + ... + 4839266.

It is an arithmetic number, because the mean of its divisors is an integer number (320596547040).

Almost surely, 2^{6388440448836} is an apocalyptic number.

It is an amenable number.

6388440448836 is an abundant number, since it is smaller than the sum of its proper divisors (9000193809084).

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

6388440448836 is a wasteful number, since it uses less digits than its factorization.

6388440448836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588044 (or 1588042 counting only the distinct ones).

The product of its (nonzero) digits is 339738624, while the sum is 66.

The spelling of 6388440448836 in words is "six trillion, three hundred eighty-eight billion, four hundred forty million, four hundred forty-eight thousand, eight hundred thirty-six".