328861360577 has 4 divisors (see below), whose sum is σ = 329171315796. Its totient is φ = 328551405360.

The previous prime is 328861360469. The next prime is 328861360609. The reversal of 328861360577 is 775063168823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 239340122176 + 89521238401 = 489224^2 + 299201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328861360577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328861366577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154976018 + ... + 154978139.

It is an arithmetic number, because the mean of its divisors is an integer number (82292828949).

Almost surely, 2^328861360577 is an apocalyptic number.

It is an amenable number.

328861360577 is a deficient number, since it is larger than the sum of its proper divisors (309955219).

328861360577 is a wasteful number, since it uses less digits than its factorization.

328861360577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309955218.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 328861360577 in words is "three hundred twenty-eight billion, eight hundred sixty-one million, three hundred sixty thousand, five hundred seventy-seven".