1026065264509 has 2 divisors, whose sum is σ = 1026065264510. Its totient is φ = 1026065264508.

The previous prime is 1026065264507. The next prime is 1026065264557. The reversal of 1026065264509 is 9054625606201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017318338884 + 8746925625 = 1008622^2 + 93525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026065264509 - 2¹ = 1026065264507 is a prime.

It is a super-2 number, since 2×1026065264509² (a number of 25 digits) contains 22 as substring.

Together with 1026065264507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1026065264507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513032632254 + 513032632255.

It is an arithmetic number, because the mean of its divisors is an integer number (513032632255).

Almost surely, 2^{1026065264509} is an apocalyptic number.

It is an amenable number.

1026065264509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026065264509 is an equidigital number, since it uses as much as digits as its factorization.

1026065264509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1026065264509 in words is "one trillion, twenty-six billion, sixty-five million, two hundred sixty-four thousand, five hundred nine".