664389545983466 has 16 divisors (see below), whose sum is σ = 1008896346599904. Its totient is φ = 328093184320464.

The previous prime is 664389545983451. The next prime is 664389545983523.

664389545983466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604583585 + ... + 605681508.

It is an arithmetic number, because the mean of its divisors is an integer number (63056021662494).

Almost surely, 2^{664389545983466} is an apocalyptic number.

664389545983466 is a deficient number, since it is larger than the sum of its proper divisors (344506800616438).

664389545983466 is a wasteful number, since it uses less digits than its factorization.

664389545983466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210268485.

The product of its digits is 96745881600, while the sum is 86.

The spelling of 664389545983466 in words is "six hundred sixty-four trillion, three hundred eighty-nine billion, five hundred forty-five million, nine hundred eighty-three thousand, four hundred sixty-six".