328727665508 has 48 divisors (see below), whose sum is σ = 656349281280. Its totient is φ = 142599309600.

The previous prime is 328727665493. The next prime is 328727665543. The reversal of 328727665508 is 805566727823.

It is a happy number.

It is a super-3 number, since 3×328727665508³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 74303 + ... + 814233.

It is an arithmetic number, because the mean of its divisors is an integer number (13673943360).

Almost surely, 2^328727665508 is an apocalyptic number.

It is an amenable number.

328727665508 is a deficient number, since it is larger than the sum of its proper divisors (327621615772).

328727665508 is a wasteful number, since it uses less digits than its factorization.

328727665508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740408 (or 740406 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 328727665508 in words is "three hundred twenty-eight billion, seven hundred twenty-seven million, six hundred sixty-five thousand, five hundred eight".