1028135230511 has 2 divisors, whose sum is σ = 1028135230512. Its totient is φ = 1028135230510.

The previous prime is 1028135230501. The next prime is 1028135230561. The reversal of 1028135230511 is 1150325318201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028135230511 is a prime.

It is a super-2 number, since 2×1028135230511² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028135230501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514067615255 + 514067615256.

It is an arithmetic number, because the mean of its divisors is an integer number (514067615256).

Almost surely, 2^{1028135230511} is an apocalyptic number.

1028135230511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028135230511 is an equidigital number, since it uses as much as digits as its factorization.

1028135230511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 1028135230511 in words is "one trillion, twenty-eight billion, one hundred thirty-five million, two hundred thirty thousand, five hundred eleven".