1005257828087 has 2 divisors, whose sum is σ = 1005257828088. Its totient is φ = 1005257828086.

The previous prime is 1005257828083. The next prime is 1005257828101. The reversal of 1005257828087 is 7808287525001.

1005257828087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1005257828087 - 2² = 1005257828083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1005257828083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502628914043 + 502628914044.

It is an arithmetic number, because the mean of its divisors is an integer number (502628914044).

Almost surely, 2^{1005257828087} is an apocalyptic number.

1005257828087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005257828087 is an equidigital number, since it uses as much as digits as its factorization.

1005257828087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2508800, while the sum is 53.

The spelling of 1005257828087 in words is "one trillion, five billion, two hundred fifty-seven million, eight hundred twenty-eight thousand, eighty-seven".