328508628889 has 4 divisors (see below), whose sum is σ = 375438433024. Its totient is φ = 281578824756.

The previous prime is 328508628883. The next prime is 328508628907. The reversal of 328508628889 is 988826805823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 328508628889 - 2⁷ = 328508628761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328508628883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23464902057 + ... + 23464902070.

It is an arithmetic number, because the mean of its divisors is an integer number (93859608256).

Almost surely, 2^328508628889 is an apocalyptic number.

It is an amenable number.

328508628889 is a deficient number, since it is larger than the sum of its proper divisors (46929804135).

328508628889 is an equidigital number, since it uses as much as digits as its factorization.

328508628889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46929804134.

The product of its (nonzero) digits is 106168320, while the sum is 67.

The spelling of 328508628889 in words is "three hundred twenty-eight billion, five hundred eight million, six hundred twenty-eight thousand, eight hundred eighty-nine".