328612212686 has 16 divisors (see below), whose sum is σ = 522318481920. Its totient is φ = 154521050880.

The previous prime is 328612212637. The next prime is 328612212701. The reversal of 328612212686 is 686212216823.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 328612212686.

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 7 ways as a sum of consecutive naturals, for example, 3705230 + ... + 3792881.

It is an arithmetic number, because the mean of its divisors is an integer number (32644905120).

Almost surely, 2^328612212686 is an apocalyptic number.

328612212686 is a deficient number, since it is larger than the sum of its proper divisors (193706269234).

328612212686 is a wasteful number, since it uses less digits than its factorization.

328612212686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499419.

The product of its digits is 663552, while the sum is 47.

The spelling of 328612212686 in words is "three hundred twenty-eight billion, six hundred twelve million, two hundred twelve thousand, six hundred eighty-six".