667895012345 has 8 divisors (see below), whose sum is σ = 874335288960. Its totient is φ = 485741827120.

The previous prime is 667895012333. The next prime is 667895012347. The reversal of 667895012345 is 543210598766.

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

It is not a de Polignac number, because 667895012345 - 2²⁰ = 667893963769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667895012347) 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, 6071772785 + ... + 6071772894.

It is an arithmetic number, because the mean of its divisors is an integer number (109291911120).

It is a 1-persistent number, because it is pandigital, but 2⋅667895012345 = 1335790024690 is not.

Almost surely, 2^667895012345 is an apocalyptic number.

It is an amenable number.

667895012345 is a deficient number, since it is larger than the sum of its proper divisors (206440276615).

667895012345 is a wasteful number, since it uses less digits than its factorization.

667895012345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12143545695.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 667895012345 in words is "six hundred sixty-seven billion, eight hundred ninety-five million, twelve thousand, three hundred forty-five".