28078812337 has 2 divisors, whose sum is σ = 28078812338. Its totient is φ = 28078812336.

The previous prime is 28078812253. The next prime is 28078812373. The reversal of 28078812337 is 73321887082.

Together with next prime (28078812373) 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., 28054910016 + 23902321 = 167496^2 + 4889^2 .

It is a cyclic number.

It is not a de Polignac number, because 28078812337 - 2¹¹ = 28078810289 is a prime.

It is not a weakly prime, because it can be changed into another prime (28078812037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039406168 + 14039406169.

It is an arithmetic number, because the mean of its divisors is an integer number (14039406169).

Almost surely, 2^28078812337 is an apocalyptic number.

It is an amenable number.

28078812337 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078812337 is an equidigital number, since it uses as much as digits as its factorization.

28078812337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 28078812337 in words is "twenty-eight billion, seventy-eight million, eight hundred twelve thousand, three hundred thirty-seven".