667671610323 has 4 divisors (see below), whose sum is σ = 890228813768. Its totient is φ = 445114406880.

The previous prime is 667671610223. The next prime is 667671610337. The reversal of 667671610323 is 323016176766.

667671610323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 667671610323 - 2²² = 667667416019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667671610223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111278601718 + ... + 111278601723.

It is an arithmetic number, because the mean of its divisors is an integer number (222557203442).

Almost surely, 2^667671610323 is an apocalyptic number.

667671610323 is a deficient number, since it is larger than the sum of its proper divisors (222557203445).

667671610323 is a wasteful number, since it uses less digits than its factorization.

667671610323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222557203444.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 667671610323 in words is "six hundred sixty-seven billion, six hundred seventy-one million, six hundred ten thousand, three hundred twenty-three".