66736733673707 has 4 divisors (see below), whose sum is σ = 66751107301800. Its totient is φ = 66722360045616.

The previous prime is 66736733673689. The next prime is 66736733673721. The reversal of 66736733673707 is 70737633763766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66736733673707 - 2⁴² = 62338687162603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66736733673307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7186807082 + ... + 7186816367.

It is an arithmetic number, because the mean of its divisors is an integer number (16687776825450).

Almost surely, 2^{66736733673707} is an apocalyptic number.

66736733673707 is a deficient number, since it is larger than the sum of its proper divisors (14373628093).

66736733673707 is a wasteful number, since it uses less digits than its factorization.

66736733673707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373628092.

The product of its (nonzero) digits is 1764331632, while the sum is 71.

The spelling of 66736733673707 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-three million, six hundred seventy-three thousand, seven hundred seven".