667367045716645 has 8 divisors (see below), whose sum is σ = 817879613474304. Its totient is φ = 522534197497104.

The previous prime is 667367045716589. The next prime is 667367045716649. The reversal of 667367045716645 is 546617540763766.

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 667367045716645 - 2³⁷ = 667229606763173 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 (667367045716649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419929884269 + ... + 1419929884738.

It is an arithmetic number, because the mean of its divisors is an integer number (102234951684288).

Almost surely, 2^{667367045716645} is an apocalyptic number.

It is an amenable number.

667367045716645 is a deficient number, since it is larger than the sum of its proper divisors (150512567757659).

667367045716645 is a wasteful number, since it uses less digits than its factorization.

667367045716645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839859769059.

The product of its (nonzero) digits is 3200601600, while the sum is 73.

The spelling of 667367045716645 in words is "six hundred sixty-seven trillion, three hundred sixty-seven billion, forty-five million, seven hundred sixteen thousand, six hundred forty-five".