6446641116 has 12 divisors (see below), whose sum is σ = 15042162632. Its totient is φ = 2148880368.

The previous prime is 6446641093. The next prime is 6446641127. The reversal of 6446641116 is 6111466446.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268610035 + ... + 268610058.

Almost surely, 2^6446641116 is an apocalyptic number.

It is an amenable number.

6446641116 is an abundant number, since it is smaller than the sum of its proper divisors (8595521516).

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

6446641116 is a wasteful number, since it uses less digits than its factorization.

6446641116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537220100 (or 537220098 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 6446641116 is about 80290.9777995012. The cubic root of 6446641116 is about 1861.1348064030.

The spelling of 6446641116 in words is "six billion, four hundred forty-six million, six hundred forty-one thousand, one hundred sixteen".