28811482993 has 2 divisors, whose sum is σ = 28811482994. Its totient is φ = 28811482992.

The previous prime is 28811482991. The next prime is 28811483033. The reversal of 28811482993 is 39928411882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28082050929 + 729432064 = 167577^2 + 27008^2 .

It is a cyclic number.

It is not a de Polignac number, because 28811482993 - 2¹ = 28811482991 is a prime.

Together with 28811482991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28811482991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405741496 + 14405741497.

It is an arithmetic number, because the mean of its divisors is an integer number (14405741497).

Almost surely, 2^28811482993 is an apocalyptic number.

It is an amenable number.

28811482993 is a deficient number, since it is larger than the sum of its proper divisors (1).

28811482993 is an equidigital number, since it uses as much as digits as its factorization.

28811482993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 55.

The spelling of 28811482993 in words is "twenty-eight billion, eight hundred eleven million, four hundred eighty-two thousand, nine hundred ninety-three".