666492464294667 has 48 divisors (see below), whose sum is σ = 968973225301536. Its totient is φ = 441441995904000.

The previous prime is 666492464294621. The next prime is 666492464294801. The reversal of 666492464294667 is 766492464294666.

It is not a de Polignac number, because 666492464294667 - 2⁷ = 666492464294539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666412464294667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18779178792 + ... + 18779214282.

It is an arithmetic number, because the mean of its divisors is an integer number (20186942193782).

Almost surely, 2^{666492464294667} is an apocalyptic number.

666492464294667 is a deficient number, since it is larger than the sum of its proper divisors (302480761006869).

666492464294667 is a wasteful number, since it uses less digits than its factorization.

666492464294667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44012 (or 44009 counting only the distinct ones).

The product of its digits is 27088846848, while the sum is 81.

Subtracting 666492464294667 from its reverse (766492464294666), we obtain a palindrome (99999999999999).

The spelling of 666492464294667 in words is "six hundred sixty-six trillion, four hundred ninety-two billion, four hundred sixty-four million, two hundred ninety-four thousand, six hundred sixty-seven".