10991838993413 has 2 divisors, whose sum is σ = 10991838993414. Its totient is φ = 10991838993412.

The previous prime is 10991838993341. The next prime is 10991838993419. The reversal of 10991838993413 is 31439983819901.

Together with previous prime (10991838993341) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8137286823649 + 2854552169764 = 2852593^2 + 1689542^2 .

It is a cyclic number.

It is not a de Polignac number, because 10991838993413 - 2¹⁴ = 10991838977029 is a prime.

It is a super-2 number, since 2×10991838993413² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10991838993419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5495919496706 + 5495919496707.

It is an arithmetic number, because the mean of its divisors is an integer number (5495919496707).

Almost surely, 2^{10991838993413} is an apocalyptic number.

It is an amenable number.

10991838993413 is a deficient number, since it is larger than the sum of its proper divisors (1).

10991838993413 is an equidigital number, since it uses as much as digits as its factorization.

10991838993413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45349632, while the sum is 68.

The spelling of 10991838993413 in words is "ten trillion, nine hundred ninety-one billion, eight hundred thirty-eight million, nine hundred ninety-three thousand, four hundred thirteen".