328178372177 has 2 divisors, whose sum is σ = 328178372178. Its totient is φ = 328178372176.

The previous prime is 328178372173. The next prime is 328178372191. The reversal of 328178372177 is 771273871823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202118579776 + 126059792401 = 449576^2 + 355049^2 .

It is a cyclic number.

It is not a de Polignac number, because 328178372177 - 2² = 328178372173 is a prime.

It is not a weakly prime, because it can be changed into another prime (328178372173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164089186088 + 164089186089.

It is an arithmetic number, because the mean of its divisors is an integer number (164089186089).

Almost surely, 2^328178372177 is an apocalyptic number.

It is an amenable number.

328178372177 is a deficient number, since it is larger than the sum of its proper divisors (1).

328178372177 is an equidigital number, since it uses as much as digits as its factorization.

328178372177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5531904, while the sum is 56.

The spelling of 328178372177 in words is "three hundred twenty-eight billion, one hundred seventy-eight million, three hundred seventy-two thousand, one hundred seventy-seven".