66766740341 has 16 divisors (see below), whose sum is σ = 76543057920. Its totient is φ = 57050103600.

The previous prime is 66766740331. The next prime is 66766740343. The reversal of 66766740341 is 14304766766.

It is not a de Polignac number, because 66766740341 - 2¹⁸ = 66766478197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66766740341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66766740343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11431700 + ... + 11437538.

It is an arithmetic number, because the mean of its divisors is an integer number (4783941120).

Almost surely, 2^66766740341 is an apocalyptic number.

It is an amenable number.

66766740341 is a deficient number, since it is larger than the sum of its proper divisors (9776317579).

66766740341 is a wasteful number, since it uses less digits than its factorization.

66766740341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10664.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 66766740341 in words is "sixty-six billion, seven hundred sixty-six million, seven hundred forty thousand, three hundred forty-one".