28452591529 has 2 divisors, whose sum is σ = 28452591530. Its totient is φ = 28452591528.

The previous prime is 28452591511. The next prime is 28452591571. The reversal of 28452591529 is 92519525482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26732250000 + 1720341529 = 163500^2 + 41477^2 .

It is a cyclic number.

It is not a de Polignac number, because 28452591529 - 2¹¹ = 28452589481 is a prime.

It is a super-2 number, since 2×28452591529² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28452591829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14226295764 + 14226295765.

It is an arithmetic number, because the mean of its divisors is an integer number (14226295765).

Almost surely, 2^28452591529 is an apocalyptic number.

It is an amenable number.

28452591529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28452591529 is an equidigital number, since it uses as much as digits as its factorization.

28452591529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 52.

The spelling of 28452591529 in words is "twenty-eight billion, four hundred fifty-two million, five hundred ninety-one thousand, five hundred twenty-nine".