667667516417 has 8 divisors (see below), whose sum is σ = 735171710112. Its totient is φ = 601297847200.

The previous prime is 667667516359. The next prime is 667667516441. The reversal of 667667516417 is 714615766766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667667516417 - 2¹² = 667667512321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667667516417.

It is not an unprimeable number, because it can be changed into a prime (667667518417) 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, 283629884 + ... + 283632237.

It is an arithmetic number, because the mean of its divisors is an integer number (91896463764).

Almost surely, 2^667667516417 is an apocalyptic number.

It is an amenable number.

667667516417 is a deficient number, since it is larger than the sum of its proper divisors (67504193695).

667667516417 is a wasteful number, since it uses less digits than its factorization.

667667516417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567262239.

The product of its digits is 53343360, while the sum is 62.

The spelling of 667667516417 in words is "six hundred sixty-seven billion, six hundred sixty-seven million, five hundred sixteen thousand, four hundred seventeen".