327638045506 has 16 divisors (see below), whose sum is σ = 498333323520. Its totient is φ = 161536969440.

The previous prime is 327638045503. The next prime is 327638045543. The reversal of 327638045506 is 605540836723.

It is a self number, because there is not a number n which added to its sum of digits gives 327638045506.

It is not an unprimeable number, because it can be changed into a prime (327638045503) 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 7 ways as a sum of consecutive naturals, for example, 2442390 + ... + 2573041.

It is an arithmetic number, because the mean of its divisors is an integer number (31145832720).

Almost surely, 2^327638045506 is an apocalyptic number.

327638045506 is a deficient number, since it is larger than the sum of its proper divisors (170695278014).

327638045506 is a wasteful number, since it uses less digits than its factorization.

327638045506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015889.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 327638045506 in words is "three hundred twenty-seven billion, six hundred thirty-eight million, forty-five thousand, five hundred six".