66147334245337 has 2 divisors, whose sum is σ = 66147334245338. Its totient is φ = 66147334245336.

The previous prime is 66147334245319. The next prime is 66147334245341. The reversal of 66147334245337 is 73354243374166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52620356412121 + 13526977833216 = 7253989^2 + 3677904^2 .

It is a cyclic number.

It is not a de Polignac number, because 66147334245337 - 2²⁷ = 66147200027609 is a prime.

It is not a weakly prime, because it can be changed into another prime (66147334245037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33073667122668 + 33073667122669.

It is an arithmetic number, because the mean of its divisors is an integer number (33073667122669).

Almost surely, 2^{66147334245337} is an apocalyptic number.

It is an amenable number.

66147334245337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66147334245337 is an equidigital number, since it uses as much as digits as its factorization.

66147334245337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 58.

The spelling of 66147334245337 in words is "sixty-six trillion, one hundred forty-seven billion, three hundred thirty-four million, two hundred forty-five thousand, three hundred thirty-seven".