66327072118213 has 2 divisors, whose sum is σ = 66327072118214. Its totient is φ = 66327072118212.

The previous prime is 66327072118199. The next prime is 66327072118253. The reversal of 66327072118213 is 31281127072366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62392589614404 + 3934482503809 = 7898898^2 + 1983553^2 .

It is a cyclic number.

It is not a de Polignac number, because 66327072118213 - 2²¹ = 66327070021061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66327072118253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33163536059106 + 33163536059107.

It is an arithmetic number, because the mean of its divisors is an integer number (33163536059107).

Almost surely, 2^{66327072118213} is an apocalyptic number.

It is an amenable number.

66327072118213 is a deficient number, since it is larger than the sum of its proper divisors (1).

66327072118213 is an equidigital number, since it uses as much as digits as its factorization.

66327072118213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 66327072118213 in words is "sixty-six trillion, three hundred twenty-seven billion, seventy-two million, one hundred eighteen thousand, two hundred thirteen".