66736674066667 has 16 divisors (see below), whose sum is σ = 76081789757952. Its totient is φ = 57997955221920.

The previous prime is 66736674066661. The next prime is 66736674066709. The reversal of 66736674066667 is 76666047663766.

66736674066667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66736674066667 - 2³⁹ = 66186918252779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66736674066593 and 66736674066602.

It is not an unprimeable number, because it can be changed into a prime (66736674066661) 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, 1500960048 + ... + 1501004509.

It is an arithmetic number, because the mean of its divisors is an integer number (4755111859872).

Almost surely, 2^{66736674066667} is an apocalyptic number.

66736674066667 is a deficient number, since it is larger than the sum of its proper divisors (9345115691285).

66736674066667 is a wasteful number, since it uses less digits than its factorization.

66736674066667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001964658.

The product of its (nonzero) digits is 6913299456, while the sum is 76.

The spelling of 66736674066667 in words is "sixty-six trillion, seven hundred thirty-six billion, six hundred seventy-four million, sixty-six thousand, six hundred sixty-seven".