28595097121 has 2 divisors, whose sum is σ = 28595097122. Its totient is φ = 28595097120.

The previous prime is 28595097119. The next prime is 28595097143. The reversal of 28595097121 is 12179059582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24957680400 + 3637416721 = 157980^2 + 60311^2 .

It is a cyclic number.

It is not a de Polignac number, because 28595097121 - 2¹ = 28595097119 is a prime.

It is a super-3 number, since 3×28595097121³ (a number of 32 digits) contains 333 as substring.

Together with 28595097119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28595097101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14297548560 + 14297548561.

It is an arithmetic number, because the mean of its divisors is an integer number (14297548561).

Almost surely, 2^28595097121 is an apocalyptic number.

It is an amenable number.

28595097121 is a deficient number, since it is larger than the sum of its proper divisors (1).

28595097121 is an equidigital number, since it uses as much as digits as its factorization.

28595097121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 49.

The spelling of 28595097121 in words is "twenty-eight billion, five hundred ninety-five million, ninety-seven thousand, one hundred twenty-one".