328466242778 has 4 divisors (see below), whose sum is σ = 492699364170. Its totient is φ = 164233121388.

The previous prime is 328466242759. The next prime is 328466242789. The reversal of 328466242778 is 877242664823.

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

It can be written as a sum of positive squares in only one way, i.e., 190674575569 + 137791667209 = 436663^2 + 371203^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82116560693 + ... + 82116560696.

Almost surely, 2^328466242778 is an apocalyptic number.

328466242778 is a deficient number, since it is larger than the sum of its proper divisors (164233121392).

328466242778 is a wasteful number, since it uses less digits than its factorization.

328466242778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164233121391.

The product of its digits is 43352064, while the sum is 59.

The spelling of 328466242778 in words is "three hundred twenty-eight billion, four hundred sixty-six million, two hundred forty-two thousand, seven hundred seventy-eight".