10871596991 has 4 divisors (see below), whose sum is σ = 11124424872. Its totient is φ = 10618769112.

The previous prime is 10871596919. The next prime is 10871597003. The reversal of 10871596991 is 19969517801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19969517801 = 683 ⋅29237947.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10871596991 is a prime.

It is a super-2 number, since 2×10871596991² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10871596391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126413876 + ... + 126413961.

It is an arithmetic number, because the mean of its divisors is an integer number (2781106218).

Almost surely, 2^10871596991 is an apocalyptic number.

10871596991 is a deficient number, since it is larger than the sum of its proper divisors (252827881).

10871596991 is an equidigital number, since it uses as much as digits as its factorization.

10871596991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252827880.

The product of its (nonzero) digits is 1224720, while the sum is 56.

The spelling of 10871596991 in words is "ten billion, eight hundred seventy-one million, five hundred ninety-six thousand, nine hundred ninety-one".