10581118991 has 2 divisors, whose sum is σ = 10581118992. Its totient is φ = 10581118990.

The previous prime is 10581118967. The next prime is 10581119009. The reversal of 10581118991 is 19981118501.

It is a happy number.

10581118991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19981118501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10581118991 - 2³⁰ = 9507377167 is a prime.

It is a super-2 number, since 2×10581118991² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10581118921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5290559495 + 5290559496.

It is an arithmetic number, because the mean of its divisors is an integer number (5290559496).

Almost surely, 2^10581118991 is an apocalyptic number.

10581118991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10581118991 is an equidigital number, since it uses as much as digits as its factorization.

10581118991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 44.

The spelling of 10581118991 in words is "ten billion, five hundred eighty-one million, one hundred eighteen thousand, nine hundred ninety-one".