66883164767 has 4 divisors (see below), whose sum is σ = 66886890096. Its totient is φ = 66879439440.

The previous prime is 66883164749. The next prime is 66883164833. The reversal of 66883164767 is 76746138866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76746138866 = 2 ⋅38373069433.

It is a cyclic number.

It is not a de Polignac number, because 66883164767 - 2⁸ = 66883164511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883164067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835603 + ... + 1871684.

It is an arithmetic number, because the mean of its divisors is an integer number (16721722524).

Almost surely, 2^66883164767 is an apocalyptic number.

66883164767 is a deficient number, since it is larger than the sum of its proper divisors (3725329).

66883164767 is a wasteful number, since it uses less digits than its factorization.

66883164767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725328.

The product of its digits is 48771072, while the sum is 62.

The spelling of 66883164767 in words is "sixty-six billion, eight hundred eighty-three million, one hundred sixty-four thousand, seven hundred sixty-seven".