28520234124553 has 2 divisors, whose sum is σ = 28520234124554. Its totient is φ = 28520234124552.

The previous prime is 28520234124527. The next prime is 28520234124619. The reversal of 28520234124553 is 35542143202582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28517874885369 + 2359239184 = 5340213^2 + 48572^2 .

It is a cyclic number.

It is not a de Polignac number, because 28520234124553 - 2³³ = 28511644189961 is a prime.

It is not a weakly prime, because it can be changed into another prime (28520234124253) 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, 14260117062276 + 14260117062277.

It is an arithmetic number, because the mean of its divisors is an integer number (14260117062277).

Almost surely, 2^{28520234124553} is an apocalyptic number.

It is an amenable number.

28520234124553 is a deficient number, since it is larger than the sum of its proper divisors (1).

28520234124553 is an equidigital number, since it uses as much as digits as its factorization.

28520234124553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 28520234124553 in words is "twenty-eight trillion, five hundred twenty billion, two hundred thirty-four million, one hundred twenty-four thousand, five hundred fifty-three".