667431241423 has 4 divisors (see below), whose sum is σ = 680024283768. Its totient is φ = 654838199080.

The previous prime is 667431241409. The next prime is 667431241441. The reversal of 667431241423 is 324142134766.

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

It is a cyclic number.

It is not a de Polignac number, because 667431241423 - 2²¹ = 667429144271 is a prime.

It is a super-2 number, since 2×667431241423² (a number of 24 digits) contains 22 as substring.

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 667431241423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667431241453) 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, 6296521093 + ... + 6296521198.

It is an arithmetic number, because the mean of its divisors is an integer number (170006070942).

Almost surely, 2^667431241423 is an apocalyptic number.

667431241423 is a deficient number, since it is larger than the sum of its proper divisors (12593042345).

667431241423 is a wasteful number, since it uses less digits than its factorization.

667431241423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593042344.

The product of its digits is 580608, while the sum is 43.

The spelling of 667431241423 in words is "six hundred sixty-seven billion, four hundred thirty-one million, two hundred forty-one thousand, four hundred twenty-three".