667118371673 has 8 divisors (see below), whose sum is σ = 719208525000. Its totient is φ = 615138697728.

The previous prime is 667118371651. The next prime is 667118371687. The reversal of 667118371673 is 376173811766.

667118371673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 238144 + 667118133529 = 488^2 + 816773^2 .

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 667118371673 - 2²⁸ = 666849936217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667118371603) 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, 27607298 + ... + 27631451.

It is an arithmetic number, because the mean of its divisors is an integer number (89901065625).

Almost surely, 2^667118371673 is an apocalyptic number.

It is an amenable number.

667118371673 is a deficient number, since it is larger than the sum of its proper divisors (52090153327).

667118371673 is a wasteful number, since it uses less digits than its factorization.

667118371673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55239691.

The product of its digits is 5334336, while the sum is 56.

The spelling of 667118371673 in words is "six hundred sixty-seven billion, one hundred eighteen million, three hundred seventy-one thousand, six hundred seventy-three".