66323343587 has 2 divisors, whose sum is σ = 66323343588. Its totient is φ = 66323343586.

The previous prime is 66323343557. The next prime is 66323343613. The reversal of 66323343587 is 78534332366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66323343587 - 2¹² = 66323339491 is a prime.

It is not a weakly prime, because it can be changed into another prime (66323343517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33161671793 + 33161671794.

It is an arithmetic number, because the mean of its divisors is an integer number (33161671794).

Almost surely, 2^66323343587 is an apocalyptic number.

66323343587 is a deficient number, since it is larger than the sum of its proper divisors (1).

66323343587 is an equidigital number, since it uses as much as digits as its factorization.

66323343587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 50.

The spelling of 66323343587 in words is "sixty-six billion, three hundred twenty-three million, three hundred forty-three thousand, five hundred eighty-seven".