28478906007529 has 2 divisors, whose sum is σ = 28478906007530. Its totient is φ = 28478906007528.

The previous prime is 28478906007527. The next prime is 28478906007593. The reversal of 28478906007529 is 92570060987482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23823409331929 + 4655496675600 = 4880923^2 + 2157660^2 .

It is a cyclic number.

It is not a de Polignac number, because 28478906007529 - 2¹ = 28478906007527 is a prime.

It is a super-2 number, since 2×28478906007529² (a number of 28 digits) contains 22 as substring.

Together with 28478906007527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28478906007527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14239453003764 + 14239453003765.

It is an arithmetic number, because the mean of its divisors is an integer number (14239453003765).

Almost surely, 2^{28478906007529} is an apocalyptic number.

It is an amenable number.

28478906007529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28478906007529 is an equidigital number, since it uses as much as digits as its factorization.

28478906007529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121927680, while the sum is 67.

The spelling of 28478906007529 in words is "twenty-eight trillion, four hundred seventy-eight billion, nine hundred six million, seven thousand, five hundred twenty-nine".