6653660666013 has 16 divisors (see below), whose sum is σ = 10123687901760. Its totient is φ = 4315887998928.

The previous prime is 6653660665937. The next prime is 6653660666047. The reversal of 6653660666013 is 3106660663566.

It is not a de Polignac number, because 6653660666013 - 2¹³ = 6653660657821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653660666053) 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 15 ways as a sum of consecutive naturals, for example, 3330159495 + ... + 3330161492.

It is an arithmetic number, because the mean of its divisors is an integer number (632730493860).

Almost surely, 2^{6653660666013} is an apocalyptic number.

It is an amenable number.

6653660666013 is a deficient number, since it is larger than the sum of its proper divisors (3470027235747).

6653660666013 is a wasteful number, since it uses less digits than its factorization.

6653660666013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660321033 (or 6660321027 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 54.

The spelling of 6653660666013 in words is "six trillion, six hundred fifty-three billion, six hundred sixty million, six hundred sixty-six thousand, thirteen".