6683667613321 has 4 divisors (see below), whose sum is σ = 6684155165700. Its totient is φ = 6683180060944.

The previous prime is 6683667613307. The next prime is 6683667613351. The reversal of 6683667613321 is 1233167663866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2561955573321 + 4121712040000 = 1600611^2 + 2030200^2 .

It is a cyclic number.

It is not a de Polignac number, because 6683667613321 - 2¹³ = 6683667605129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6683667613351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243755626 + ... + 243783043.

It is an arithmetic number, because the mean of its divisors is an integer number (1671038791425).

Almost surely, 2^{6683667613321} is an apocalyptic number.

It is an amenable number.

6683667613321 is a deficient number, since it is larger than the sum of its proper divisors (487552379).

6683667613321 is a wasteful number, since it uses less digits than its factorization.

6683667613321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487552378.

The product of its digits is 23514624, while the sum is 58.

The spelling of 6683667613321 in words is "six trillion, six hundred eighty-three billion, six hundred sixty-seven million, six hundred thirteen thousand, three hundred twenty-one".