180828910081 has 4 divisors (see below), whose sum is σ = 180977497092. Its totient is φ = 180680323072.

The previous prime is 180828910051. The next prime is 180828910091. The reversal of 180828910081 is 180019828081.

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 52120890000 + 128708020081 = 228300^2 + 358759^2 .

It is a cyclic number.

It is not a de Polignac number, because 180828910081 - 2⁵ = 180828910049 is a prime.

It is a super-2 number, since 2×180828910081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180828910001) 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, 74291680 + ... + 74294113.

It is an arithmetic number, because the mean of its divisors is an integer number (45244374273).

Almost surely, 2^180828910081 is an apocalyptic number.

It is an amenable number.

180828910081 is a deficient number, since it is larger than the sum of its proper divisors (148587011).

180828910081 is a wasteful number, since it uses less digits than its factorization.

180828910081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148587010.

The product of its (nonzero) digits is 73728, while the sum is 46.

The spelling of 180828910081 in words is "one hundred eighty billion, eight hundred twenty-eight million, nine hundred ten thousand, eighty-one".