28508412733 has 2 divisors, whose sum is σ = 28508412734. Its totient is φ = 28508412732.

The previous prime is 28508412707. The next prime is 28508412743. The reversal of 28508412733 is 33721480582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28452267684 + 56145049 = 168678^2 + 7493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28508412733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28508412733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28508412703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14254206366 + 14254206367.

It is an arithmetic number, because the mean of its divisors is an integer number (14254206367).

Almost surely, 2^28508412733 is an apocalyptic number.

It is an amenable number.

28508412733 is a deficient number, since it is larger than the sum of its proper divisors (1).

28508412733 is an equidigital number, since it uses as much as digits as its factorization.

28508412733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 28508412733 in words is "twenty-eight billion, five hundred eight million, four hundred twelve thousand, seven hundred thirty-three".