664321123466 has 64 divisors (see below), whose sum is σ = 1351180728576. Its totient is φ = 236551104000.

The previous prime is 664321123447. The next prime is 664321123519.

664321123466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1440515 + ... + 1844918.

It is an arithmetic number, because the mean of its divisors is an integer number (21112198884).

Almost surely, 2^664321123466 is an apocalyptic number.

664321123466 is an abundant number, since it is smaller than the sum of its proper divisors (686859605110).

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

664321123466 is a wasteful number, since it uses less digits than its factorization.

664321123466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285567.

The product of its digits is 746496, while the sum is 44.

It can be divided in two parts, 664321 and 123466, that added together give a palindrome (787787).

The spelling of 664321123466 in words is "six hundred sixty-four billion, three hundred twenty-one million, one hundred twenty-three thousand, four hundred sixty-six".