667066733667 has 8 divisors (see below), whose sum is σ = 988247012880. Its totient is φ = 444711155760.

The previous prime is 667066733647. The next prime is 667066733677. The reversal of 667066733667 is 766337660766.

It is not a de Polignac number, because 667066733667 - 2⁷ = 667066733539 is a prime.

It is a super-2 number, since 2×667066733667² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667066733647) 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 7 ways as a sum of consecutive naturals, for example, 12353087634 + ... + 12353087687.

It is an arithmetic number, because the mean of its divisors is an integer number (123530876610).

Almost surely, 2^667066733667 is an apocalyptic number.

667066733667 is a deficient number, since it is larger than the sum of its proper divisors (321180279213).

667066733667 is a wasteful number, since it uses less digits than its factorization.

667066733667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24706175330 (or 24706175324 counting only the distinct ones).

The product of its (nonzero) digits is 144027072, while the sum is 63.

The spelling of 667066733667 in words is "six hundred sixty-seven billion, sixty-six million, seven hundred thirty-three thousand, six hundred sixty-seven".