6561417637222 has 16 divisors (see below), whose sum is σ = 11909800081440. Its totient is φ = 2646622240128.

The previous prime is 6561417637219. The next prime is 6561417637237. The reversal of 6561417637222 is 2227367141656.

It is a self number, because there is not a number n which added to its sum of digits gives 6561417637222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13784490597 + ... + 13784491072.

It is an arithmetic number, because the mean of its divisors is an integer number (744362505090).

Almost surely, 2^{6561417637222} is an apocalyptic number.

6561417637222 is a deficient number, since it is larger than the sum of its proper divisors (5348382444218).

6561417637222 is a wasteful number, since it uses less digits than its factorization.

6561417637222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27568981695.

The product of its digits is 5080320, while the sum is 52.

The spelling of 6561417637222 in words is "six trillion, five hundred sixty-one billion, four hundred seventeen million, six hundred thirty-seven thousand, two hundred twenty-two".