6448861116 has 48 divisors (see below), whose sum is σ = 16731338400. Its totient is φ = 2148068736.

The previous prime is 6448861093. The next prime is 6448861121. The reversal of 6448861116 is 6111688446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133930 + ... + 175598.

It is an arithmetic number, because the mean of its divisors is an integer number (348569550).

Almost surely, 2^6448861116 is an apocalyptic number.

It is an amenable number.

6448861116 is an abundant number, since it is smaller than the sum of its proper divisors (10282477284).

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

6448861116 is a wasteful number, since it uses less digits than its factorization.

6448861116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43115 (or 43107 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 6448861116 is about 80304.8013259481. The cubic root of 6448861116 is about 1861.3484186812.

The spelling of 6448861116 in words is "six billion, four hundred forty-eight million, eight hundred sixty-one thousand, one hundred sixteen".