10955255787809 has 2 divisors, whose sum is σ = 10955255787810. Its totient is φ = 10955255787808.

The previous prime is 10955255787781. The next prime is 10955255787941. The reversal of 10955255787809 is 90878755255901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9505832421409 + 1449423366400 = 3083153^2 + 1203920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10955255787809 is a prime.

It is a super-4 number, since 4×10955255787809⁴ (a number of 53 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10955255787109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5477627893904 + 5477627893905.

It is an arithmetic number, because the mean of its divisors is an integer number (5477627893905).

Almost surely, 2^{10955255787809} is an apocalyptic number.

It is an amenable number.

10955255787809 is a deficient number, since it is larger than the sum of its proper divisors (1).

10955255787809 is an equidigital number, since it uses as much as digits as its factorization.

10955255787809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520000, while the sum is 71.

The spelling of 10955255787809 in words is "ten trillion, nine hundred fifty-five billion, two hundred fifty-five million, seven hundred eighty-seven thousand, eight hundred nine".