328787906895 has 64 divisors (see below), whose sum is σ = 669758423040. Its totient is φ = 149910441984.

The previous prime is 328787906869. The next prime is 328787906897. The reversal of 328787906895 is 598609787823.

328787906895 is a `hidden beast` number, since 328 + 78 + 7 + 90 + 68 + 95 = 666.

It is not a de Polignac number, because 328787906895 - 2⁶ = 328787906831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328787906897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92274 + ... + 816143.

It is an arithmetic number, because the mean of its divisors is an integer number (10464975360).

Almost surely, 2^328787906895 is an apocalyptic number.

328787906895 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

328787906895 is an abundant number, since it is smaller than the sum of its proper divisors (340970516145).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328787906895 is a wasteful number, since it uses less digits than its factorization.

328787906895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908821 (or 908815 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 328787906895 in words is "three hundred twenty-eight billion, seven hundred eighty-seven million, nine hundred six thousand, eight hundred ninety-five".