328420486505 has 64 divisors (see below), whose sum is σ = 414865152000. Its totient is φ = 249346621440.

The previous prime is 328420486489. The next prime is 328420486549. The reversal of 328420486505 is 505684024823.

It is a happy number.

It is not a de Polignac number, because 328420486505 - 2⁴ = 328420486489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328420486505.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 731448521 + ... + 731448969.

It is an arithmetic number, because the mean of its divisors is an integer number (6482268000).

Almost surely, 2^328420486505 is an apocalyptic number.

It is an amenable number.

328420486505 is a deficient number, since it is larger than the sum of its proper divisors (86444665495).

328420486505 is a wasteful number, since it uses less digits than its factorization.

328420486505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 328420486505 in words is "three hundred twenty-eight billion, four hundred twenty million, four hundred eighty-six thousand, five hundred five".