28793595613 has 2 divisors, whose sum is σ = 28793595614. Its totient is φ = 28793595612.

The previous prime is 28793595583. The next prime is 28793595631. The reversal of 28793595613 is 31659539782.

Together with next prime (28793595631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24778852569 + 4014743044 = 157413^2 + 63362^2 .

It is a cyclic number.

It is not a de Polignac number, because 28793595613 - 2¹³ = 28793587421 is a prime.

It is a super-4 number, since 4×28793595613⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28793595643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14396797806 + 14396797807.

It is an arithmetic number, because the mean of its divisors is an integer number (14396797807).

Almost surely, 2^28793595613 is an apocalyptic number.

It is an amenable number.

28793595613 is a deficient number, since it is larger than the sum of its proper divisors (1).

28793595613 is an equidigital number, since it uses as much as digits as its factorization.

28793595613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 58.

The spelling of 28793595613 in words is "twenty-eight billion, seven hundred ninety-three million, five hundred ninety-five thousand, six hundred thirteen".