664845182308 has 48 divisors (see below), whose sum is σ = 1186233048000. Its totient is φ = 325951532928.

The previous prime is 664845182303. The next prime is 664845182317. The reversal of 664845182308 is 803281548466.

It is not an unprimeable number, because it can be changed into a prime (664845182303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220218823 + ... + 220221841.

It is an arithmetic number, because the mean of its divisors is an integer number (24713188500).

Almost surely, 2^664845182308 is an apocalyptic number.

It is an amenable number.

664845182308 is a deficient number, since it is larger than the sum of its proper divisors (521387865692).

664845182308 is a wasteful number, since it uses less digits than its factorization.

664845182308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164 (or 5162 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 664845182308 in words is "six hundred sixty-four billion, eight hundred forty-five million, one hundred eighty-two thousand, three hundred eight".