328283077781 has 2 divisors, whose sum is σ = 328283077782. Its totient is φ = 328283077780.

The previous prime is 328283077769. The next prime is 328283077823. The reversal of 328283077781 is 187770382823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249415342225 + 78867735556 = 499415^2 + 280834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328283077781 is a prime.

It is a super-2 number, since 2×328283077781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328283077711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164141538890 + 164141538891.

It is an arithmetic number, because the mean of its divisors is an integer number (164141538891).

Almost surely, 2^328283077781 is an apocalyptic number.

It is an amenable number.

328283077781 is a deficient number, since it is larger than the sum of its proper divisors (1).

328283077781 is an equidigital number, since it uses as much as digits as its factorization.

328283077781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6322176, while the sum is 56.

The spelling of 328283077781 in words is "three hundred twenty-eight billion, two hundred eighty-three million, seventy-seven thousand, seven hundred eighty-one".