67316586221 has 4 divisors (see below), whose sum is σ = 67688501244. Its totient is φ = 66944671200.

The previous prime is 67316586217. The next prime is 67316586223. The reversal of 67316586221 is 12268561376.

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 19884102121 + 47432484100 = 141011^2 + 217790^2 .

It is a cyclic number.

It is not a de Polignac number, because 67316586221 - 2² = 67316586217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67316586223) 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, 185957240 + ... + 185957601.

It is an arithmetic number, because the mean of its divisors is an integer number (16922125311).

Almost surely, 2^67316586221 is an apocalyptic number.

It is an amenable number.

67316586221 is a deficient number, since it is larger than the sum of its proper divisors (371915023).

67316586221 is a wasteful number, since it uses less digits than its factorization.

67316586221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371915022.

The product of its digits is 725760, while the sum is 47.

The spelling of 67316586221 in words is "sixty-seven billion, three hundred sixteen million, five hundred eighty-six thousand, two hundred twenty-one".