312563664646 has 8 divisors (see below), whose sum is σ = 468905026320. Its totient is φ = 156261989208.

The previous prime is 312563664631. The next prime is 312563664659. The reversal of 312563664646 is 646466365213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 312563664593 and 312563664602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9901861 + ... + 9933376.

It is an arithmetic number, because the mean of its divisors is an integer number (58613128290).

Almost surely, 2^312563664646 is an apocalyptic number.

312563664646 is a deficient number, since it is larger than the sum of its proper divisors (156341361674).

312563664646 is a wasteful number, since it uses less digits than its factorization.

312563664646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19843118.

The product of its digits is 11197440, while the sum is 52.

The spelling of 312563664646 in words is "three hundred twelve billion, five hundred sixty-three million, six hundred sixty-four thousand, six hundred forty-six".