328686666610544 has 20 divisors (see below), whose sum is σ = 694724090790840. Its totient is φ = 149403030277440.

The previous prime is 328686666610459. The next prime is 328686666610571. The reversal of 328686666610544 is 445016666686823.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933768939059 + ... + 933768939410.

It is an arithmetic number, because the mean of its divisors is an integer number (34736204539542).

Almost surely, 2^{328686666610544} is an apocalyptic number.

It is an amenable number.

328686666610544 is an abundant number, since it is smaller than the sum of its proper divisors (366037424180296).

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

328686666610544 is a wasteful number, since it uses less digits than its factorization.

328686666610544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867537878488 (or 1867537878482 counting only the distinct ones).

The product of its (nonzero) digits is 1433272320, while the sum is 71.

The spelling of 328686666610544 in words is "three hundred twenty-eight trillion, six hundred eighty-six billion, six hundred sixty-six million, six hundred ten thousand, five hundred forty-four".