66327673499 has 2 divisors, whose sum is σ = 66327673500. Its totient is φ = 66327673498.

The previous prime is 66327673487. The next prime is 66327673507. The reversal of 66327673499 is 99437672366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66327673499 - 2¹⁶ = 66327607963 is a prime.

It is not a weakly prime, because it can be changed into another prime (66327673469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33163836749 + 33163836750.

It is an arithmetic number, because the mean of its divisors is an integer number (33163836750).

Almost surely, 2^66327673499 is an apocalyptic number.

66327673499 is a deficient number, since it is larger than the sum of its proper divisors (1).

66327673499 is an equidigital number, since it uses as much as digits as its factorization.

66327673499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61725888, while the sum is 62.

The spelling of 66327673499 in words is "sixty-six billion, three hundred twenty-seven million, six hundred seventy-three thousand, four hundred ninety-nine".