28420210135487 has 2 divisors, whose sum is σ = 28420210135488. Its totient is φ = 28420210135486.

The previous prime is 28420210135433. The next prime is 28420210135523. The reversal of 28420210135487 is 78453101202482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28420210135487 - 2²⁰ = 28420209086911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28420210105487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14210105067743 + 14210105067744.

It is an arithmetic number, because the mean of its divisors is an integer number (14210105067744).

Almost surely, 2^{28420210135487} is an apocalyptic number.

28420210135487 is a deficient number, since it is larger than the sum of its proper divisors (1).

28420210135487 is an equidigital number, since it uses as much as digits as its factorization.

28420210135487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 28420210135487 in words is "twenty-eight trillion, four hundred twenty billion, two hundred ten million, one hundred thirty-five thousand, four hundred eighty-seven".