667038041867 has 4 divisors (see below), whose sum is σ = 673157657040. Its totient is φ = 660918426696.

The previous prime is 667038041849. The next prime is 667038041899. The reversal of 667038041867 is 768140830766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667038041867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667038041567) 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, 3059807423 + ... + 3059807640.

It is an arithmetic number, because the mean of its divisors is an integer number (168289414260).

Almost surely, 2^667038041867 is an apocalyptic number.

667038041867 is a deficient number, since it is larger than the sum of its proper divisors (6119615173).

667038041867 is a wasteful number, since it uses less digits than its factorization.

667038041867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119615172.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 667038041867 in words is "six hundred sixty-seven billion, thirty-eight million, forty-one thousand, eight hundred sixty-seven".