66736740070369 has 2 divisors, whose sum is σ = 66736740070370. Its totient is φ = 66736740070368.

The previous prime is 66736740070337. The next prime is 66736740070417. The reversal of 66736740070369 is 96307004763766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36541879920144 + 30194860150225 = 6044988^2 + 5494985^2 .

It is a cyclic number.

It is not a de Polignac number, because 66736740070369 - 2⁵ = 66736740070337 is a prime.

It is a super-2 number, since 2×66736740070369² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66736740070369.

It is not a weakly prime, because it can be changed into another prime (66736740070309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368370035184 + 33368370035185.

It is an arithmetic number, because the mean of its divisors is an integer number (33368370035185).

Almost surely, 2^{66736740070369} is an apocalyptic number.

It is an amenable number.

66736740070369 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736740070369 is an equidigital number, since it uses as much as digits as its factorization.

66736740070369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144027072, while the sum is 64.

The spelling of 66736740070369 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred forty million, seventy thousand, three hundred sixty-nine".