328285778061 has 16 divisors (see below), whose sum is σ = 441765632000. Its totient is φ = 216831878208.

The previous prime is 328285778059. The next prime is 328285778081. The reversal of 328285778061 is 160877582823.

It is not a de Polignac number, because 328285778061 - 2¹ = 328285778059 is a prime.

It is a super-2 number, since 2×328285778061² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328285777992 and 328285778010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328285778081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4986420 + ... + 5051826.

It is an arithmetic number, because the mean of its divisors is an integer number (27610352000).

Almost surely, 2^328285778061 is an apocalyptic number.

It is an amenable number.

328285778061 is a deficient number, since it is larger than the sum of its proper divisors (113479853939).

328285778061 is a wasteful number, since it uses less digits than its factorization.

328285778061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80868.

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 328285778061 in words is "three hundred twenty-eight billion, two hundred eighty-five million, seven hundred seventy-eight thousand, sixty-one".