664079863312 has 20 divisors (see below), whose sum is σ = 1286683272000. Its totient is φ = 332032567328.

The previous prime is 664079863309. The next prime is 664079863313. The reversal of 664079863312 is 213368970466.

It is not an unprimeable number, because it can be changed into a prime (664079863313) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 324189 + ... + 1197187.

It is an arithmetic number, because the mean of its divisors is an integer number (64334163600).

Almost surely, 2^664079863312 is an apocalyptic number.

It is an amenable number.

664079863312 is a deficient number, since it is larger than the sum of its proper divisors (622603408688).

664079863312 is a wasteful number, since it uses less digits than its factorization.

664079863312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920550 (or 920544 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 664079863312 in words is "six hundred sixty-four billion, seventy-nine million, eight hundred sixty-three thousand, three hundred twelve".