329731650856 has 8 divisors (see below), whose sum is σ = 618246845370. Its totient is φ = 164865825424.

The previous prime is 329731650779. The next prime is 329731650881. The reversal of 329731650856 is 658056137923.

It can be written as a sum of positive squares in only one way, i.e., 308987009956 + 20744640900 = 555866^2 + 144030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 329731650797 and 329731650806.

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 as a sum of consecutive naturals, namely, 20608228171 + ... + 20608228186.

Almost surely, 2^329731650856 is an apocalyptic number.

It is an amenable number.

329731650856 is a deficient number, since it is larger than the sum of its proper divisors (288515194514).

329731650856 is a wasteful number, since it uses less digits than its factorization.

329731650856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41216456363 (or 41216456359 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 329731650856 in words is "three hundred twenty-nine billion, seven hundred thirty-one million, six hundred fifty thousand, eight hundred fifty-six".