28321383553 has 2 divisors, whose sum is σ = 28321383554. Its totient is φ = 28321383552.

The previous prime is 28321383479. The next prime is 28321383583. The reversal of 28321383553 is 35538312382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24234082929 + 4087300624 = 155673^2 + 63932^2 .

It is a cyclic number.

It is not a de Polignac number, because 28321383553 - 2¹³ = 28321375361 is a prime.

It is a super-2 number, since 2×28321383553² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28321383583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14160691776 + 14160691777.

It is an arithmetic number, because the mean of its divisors is an integer number (14160691777).

Almost surely, 2^28321383553 is an apocalyptic number.

It is an amenable number.

28321383553 is a deficient number, since it is larger than the sum of its proper divisors (1).

28321383553 is an equidigital number, since it uses as much as digits as its factorization.

28321383553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 43.

The spelling of 28321383553 in words is "twenty-eight billion, three hundred twenty-one million, three hundred eighty-three thousand, five hundred fifty-three".