28420210135523 has 2 divisors, whose sum is σ = 28420210135524. Its totient is φ = 28420210135522.

The previous prime is 28420210135487. The next prime is 28420210135561. The reversal of 28420210135523 is 32553101202482.

It is an a-pointer prime, because the next prime (28420210135561) can be obtained adding 28420210135523 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28420210135523 - 2²⁸ = 28419941700067 is a prime.

It is not a weakly prime, because it can be changed into another prime (28420210135123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14210105067761 + 14210105067762.

It is an arithmetic number, because the mean of its divisors is an integer number (14210105067762).

Almost surely, 2^{28420210135523} is an apocalyptic number.

28420210135523 is a deficient number, since it is larger than the sum of its proper divisors (1).

28420210135523 is an equidigital number, since it uses as much as digits as its factorization.

28420210135523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 28420210135523 in words is "twenty-eight trillion, four hundred twenty billion, two hundred ten million, one hundred thirty-five thousand, five hundred twenty-three".