6631668301728 has 96 divisors (see below), whose sum is σ = 17433130865472. Its totient is φ = 2207383603200.

The previous prime is 6631668301721. The next prime is 6631668301757. The reversal of 6631668301728 is 8271038661366.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (6631668301721) 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, 200390463 + ... + 200423553.

It is an arithmetic number, because the mean of its divisors is an integer number (181595113182).

Almost surely, 2^{6631668301728} is an apocalyptic number.

It is an amenable number.

6631668301728 is an abundant number, since it is smaller than the sum of its proper divisors (10801462563744).

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

6631668301728 is a wasteful number, since it uses less digits than its factorization.

6631668301728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36038 (or 36030 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 57.

It can be divided in two parts, 6631668 and 301728, that added together give a palindrome (6933396).

The spelling of 6631668301728 in words is "six trillion, six hundred thirty-one billion, six hundred sixty-eight million, three hundred one thousand, seven hundred twenty-eight".