6640222644241 has 6 divisors (see below), whose sum is σ = 6877091467142. Its totient is φ = 6411249448800.

The previous prime is 6640222644239. The next prime is 6640222644271. The reversal of 6640222644241 is 1424462220466.

It can be written as a sum of positive squares in 3 ways, for example, as 596492084241 + 6043730560000 = 772329^2 + 2458400^2 .

It is not a de Polignac number, because 6640222644241 - 2¹ = 6640222644239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6640222644271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3947812860 + ... + 3947814541.

Almost surely, 2^{6640222644241} is an apocalyptic number.

It is an amenable number.

6640222644241 is a deficient number, since it is larger than the sum of its proper divisors (236868822901).

6640222644241 is an equidigital number, since it uses as much as digits as its factorization.

6640222644241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895627459 (or 7895627430 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 43.

The spelling of 6640222644241 in words is "six trillion, six hundred forty billion, two hundred twenty-two million, six hundred forty-four thousand, two hundred forty-one".