328161478464 has 224 divisors, whose sum is σ = 1039156346880. Its totient is φ = 101255616000.

The previous prime is 328161478457. The next prime is 328161478481. The reversal of 328161478464 is 464874161823.

328161478464 is a `hidden beast` number, since 3 + 2 + 8 + 161 + 478 + 4 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 328161478464.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1098889 + ... + 1365239.

Almost surely, 2^328161478464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328161478464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519578173440).

328161478464 is an abundant number, since it is smaller than the sum of its proper divisors (710994868416).

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

328161478464 is a wasteful number, since it uses less digits than its factorization.

328161478464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266426 (or 266410 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The spelling of 328161478464 in words is "three hundred twenty-eight billion, one hundred sixty-one million, four hundred seventy-eight thousand, four hundred sixty-four".