6640750116001 has 4 divisors (see below), whose sum is σ = 6640756225092. Its totient is φ = 6640744006912.

The previous prime is 6640750115969. The next prime is 6640750116023. The reversal of 6640750116001 is 1006110570466.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2291227142400 + 4349522973601 = 1513680^2 + 2085551^2 .

It is a cyclic number.

It is not a de Polignac number, because 6640750116001 - 2⁵ = 6640750115969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6640750116071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932680 + ... + 3761833.

It is an arithmetic number, because the mean of its divisors is an integer number (1660189056273).

Almost surely, 2^{6640750116001} is an apocalyptic number.

It is an amenable number.

6640750116001 is a deficient number, since it is larger than the sum of its proper divisors (6109091).

6640750116001 is a wasteful number, since it uses less digits than its factorization.

6640750116001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6109090.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 6640750116001 its reverse (1006110570466), we get a palindrome (7646860686467).

The spelling of 6640750116001 in words is "six trillion, six hundred forty billion, seven hundred fifty million, one hundred sixteen thousand, one".