6636081622643 has 16 divisors (see below), whose sum is σ = 7557204427776. Its totient is φ = 5768147024640.

The previous prime is 6636081622609. The next prime is 6636081622661. The reversal of 6636081622643 is 3462261806366.

It is not a de Polignac number, because 6636081622643 - 2¹⁶ = 6636081557107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6636081622663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4740446 + ... + 5978627.

It is an arithmetic number, because the mean of its divisors is an integer number (472325276736).

Almost surely, 2^{6636081622643} is an apocalyptic number.

6636081622643 is a deficient number, since it is larger than the sum of its proper divisors (921122805133).

6636081622643 is a wasteful number, since it uses less digits than its factorization.

6636081622643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10721554.

The product of its (nonzero) digits is 8957952, while the sum is 53.

The spelling of 6636081622643 in words is "six trillion, six hundred thirty-six billion, eighty-one million, six hundred twenty-two thousand, six hundred forty-three".