1026647731009 has 2 divisors, whose sum is σ = 1026647731010. Its totient is φ = 1026647731008.

The previous prime is 1026647731003. The next prime is 1026647731061. The reversal of 1026647731009 is 9001377466201.

1026647731009 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 can be written as a sum of positive squares in only one way, i.e., 648422731009 + 378225000000 = 805247^2 + 615000^2 .

It is an emirp because it is prime and its reverse (9001377466201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1026647731009 - 2¹¹ = 1026647728961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1026647731009.

It is not a weakly prime, because it can be changed into another prime (1026647731003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513323865504 + 513323865505.

It is an arithmetic number, because the mean of its divisors is an integer number (513323865505).

Almost surely, 2^{1026647731009} is an apocalyptic number.

It is an amenable number.

1026647731009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026647731009 is an equidigital number, since it uses as much as digits as its factorization.

1026647731009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 1026647731009 in words is "one trillion, twenty-six billion, six hundred forty-seven million, seven hundred thirty-one thousand, nine".