6600641220001 has 8 divisors (see below), whose sum is σ = 6607460217384. Its totient is φ = 6593822822400.

The previous prime is 6600641219983. The next prime is 6600641220011. The reversal of 6600641220001 is 1000221460066.

6600641220001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 639968000400 + 5960673219601 = 799980^2 + 2441449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6600641220001 - 2⁵ = 6600641219969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6600641220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23847201 + ... + 24122401.

It is an arithmetic number, because the mean of its divisors is an integer number (825932527173).

Almost surely, 2^{6600641220001} is an apocalyptic number.

It is an amenable number.

6600641220001 is a deficient number, since it is larger than the sum of its proper divisors (6818997383).

6600641220001 is a wasteful number, since it uses less digits than its factorization.

6600641220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299891.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 6600641220001 its reverse (1000221460066), we get a palindrome (7600862680067).

The spelling of 6600641220001 in words is "six trillion, six hundred billion, six hundred forty-one million, two hundred twenty thousand, one".