667231536667 has 16 divisors (see below), whose sum is σ = 722540666880. Its totient is φ = 614661213600.

The previous prime is 667231536577. The next prime is 667231536677. The reversal of 667231536667 is 766635132766.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 667231536667 - 2¹⁹ = 667231012379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667231536677) 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 15 ways as a sum of consecutive naturals, for example, 5162883 + ... + 5290540.

It is an arithmetic number, because the mean of its divisors is an integer number (45158791680).

Almost surely, 2^667231536667 is an apocalyptic number.

667231536667 is a deficient number, since it is larger than the sum of its proper divisors (55309130213).

667231536667 is a wasteful number, since it uses less digits than its factorization.

667231536667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10453554.

The product of its digits is 34292160, while the sum is 58.

The spelling of 667231536667 in words is "six hundred sixty-seven billion, two hundred thirty-one million, five hundred thirty-six thousand, six hundred sixty-seven".