667340808079 has 16 divisors (see below), whose sum is σ = 737493880320. Its totient is φ = 598774325760.

The previous prime is 667340808041. The next prime is 667340808107. The reversal of 667340808079 is 970808043766.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 667340808079 - 2¹¹ = 667340806031 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 (667340800079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2252884 + ... + 2531830.

It is an arithmetic number, because the mean of its divisors is an integer number (46093367520).

Almost surely, 2^667340808079 is an apocalyptic number.

667340808079 is a deficient number, since it is larger than the sum of its proper divisors (70153072241).

667340808079 is a wasteful number, since it uses less digits than its factorization.

667340808079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281790.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 667340808079 in words is "six hundred sixty-seven billion, three hundred forty million, eight hundred eight thousand, seventy-nine".