6641488831028 has 12 divisors (see below), whose sum is σ = 11623080618660. Its totient is φ = 3320608654272.

The previous prime is 6641488830937. The next prime is 6641488831051. The reversal of 6641488831028 is 8201388841466.

It can be written as a sum of positive squares in 2 ways, for example, as 1453717312804 + 5187771518224 = 1205702^2 + 2277668^2 .

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, 33830201 + ... + 34025952.

It is an arithmetic number, because the mean of its divisors is an integer number (968590051555).

Almost surely, 2^{6641488831028} is an apocalyptic number.

It is an amenable number.

6641488831028 is a deficient number, since it is larger than the sum of its proper divisors (4981591787632).

6641488831028 is a wasteful number, since it uses less digits than its factorization.

6641488831028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67880626 (or 67880624 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 59.

The spelling of 6641488831028 in words is "six trillion, six hundred forty-one billion, four hundred eighty-eight million, eight hundred thirty-one thousand, twenty-eight".