666464464666 has 192 divisors, whose sum is σ = 1382571804672. Its totient is φ = 233906400000.

The previous prime is 666464464553. The next prime is 666464464723.

666464464666 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 666464464598 and 666464464607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 186630661 + ... + 186634231.

It is an arithmetic number, because the mean of its divisors is an integer number (7200894816).

Almost surely, 2^666464464666 is an apocalyptic number.

666464464666 is an abundant number, since it is smaller than the sum of its proper divisors (716107340006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666464464666 is a wasteful number, since it uses less digits than its factorization.

666464464666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789 (or 3776 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 64.

The spelling of 666464464666 in words is "six hundred sixty-six billion, four hundred sixty-four million, four hundred sixty-four thousand, six hundred sixty-six".