6221661448 has 16 divisors (see below), whose sum is σ = 11666454480. Its totient is φ = 3110606928.

The previous prime is 6221661431. The next prime is 6221661487. The reversal of 6221661448 is 8441661226.

It is a self number, because there is not a number n which added to its sum of digits gives 6221661448.

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, 191011 + ... + 221197.

It is an arithmetic number, because the mean of its divisors is an integer number (729153405).

Almost surely, 2^6221661448 is an apocalyptic number.

It is an amenable number.

6221661448 is a deficient number, since it is larger than the sum of its proper divisors (5444793032).

6221661448 is a wasteful number, since it uses less digits than its factorization.

6221661448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55956 (or 55952 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 6221661448 is about 78877.5091391710. The cubic root of 6221661448 is about 1839.2275278241.

The spelling of 6221661448 in words is "six billion, two hundred twenty-one million, six hundred sixty-one thousand, four hundred forty-eight".