28542335321 has 2 divisors, whose sum is σ = 28542335322. Its totient is φ = 28542335320.

The previous prime is 28542335291. The next prime is 28542335359. The reversal of 28542335321 is 12353324582.

It is an a-pointer prime, because the next prime (28542335359) can be obtained adding 28542335321 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19206910921 + 9335424400 = 138589^2 + 96620^2 .

It is a cyclic number.

It is not a de Polignac number, because 28542335321 - 2²² = 28538141017 is a prime.

It is not a weakly prime, because it can be changed into another prime (28542335821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14271167660 + 14271167661.

It is an arithmetic number, because the mean of its divisors is an integer number (14271167661).

Almost surely, 2^28542335321 is an apocalyptic number.

It is an amenable number.

28542335321 is a deficient number, since it is larger than the sum of its proper divisors (1).

28542335321 is an equidigital number, since it uses as much as digits as its factorization.

28542335321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 38.

The spelling of 28542335321 in words is "twenty-eight billion, five hundred forty-two million, three hundred thirty-five thousand, three hundred twenty-one".