66736704067 has 16 divisors (see below), whose sum is σ = 76329158400. Its totient is φ = 57756837600.

The previous prime is 66736704019. The next prime is 66736704079. The reversal of 66736704067 is 76040763766.

It is a de Polignac number, because none of the positive numbers 2^k-66736704067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66736704767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571692 + ... + 678457.

It is an arithmetic number, because the mean of its divisors is an integer number (4770572400).

Almost surely, 2^66736704067 is an apocalyptic number.

66736704067 is a deficient number, since it is larger than the sum of its proper divisors (9592454333).

66736704067 is a wasteful number, since it uses less digits than its factorization.

66736704067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250394.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 66736704067 in words is "sixty-six billion, seven hundred thirty-six million, seven hundred four thousand, sixty-seven".