28799505533 has 2 divisors, whose sum is σ = 28799505534. Its totient is φ = 28799505532.

The previous prime is 28799505487. The next prime is 28799505583. The reversal of 28799505533 is 33550599782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20136177604 + 8663327929 = 141902^2 + 93077^2 .

It is a cyclic number.

It is not a de Polignac number, because 28799505533 - 2²⁶ = 28732396669 is a prime.

It is a super-2 number, since 2×28799505533² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28799505583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14399752766 + 14399752767.

It is an arithmetic number, because the mean of its divisors is an integer number (14399752767).

Almost surely, 2^28799505533 is an apocalyptic number.

It is an amenable number.

28799505533 is a deficient number, since it is larger than the sum of its proper divisors (1).

28799505533 is an equidigital number, since it uses as much as digits as its factorization.

28799505533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206000, while the sum is 56.

The spelling of 28799505533 in words is "twenty-eight billion, seven hundred ninety-nine million, five hundred five thousand, five hundred thirty-three".