10871967691 has 4 divisors (see below), whose sum is σ = 11708272912. Its totient is φ = 10035662472.

The previous prime is 10871967683. The next prime is 10871967709. The reversal of 10871967691 is 19676917801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19676917801 = 17 ⋅1157465753.

It is a cyclic number.

It is not a de Polignac number, because 10871967691 - 2³ = 10871967683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10871967611) 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, 418152591 + ... + 418152616.

It is an arithmetic number, because the mean of its divisors is an integer number (2927068228).

Almost surely, 2^10871967691 is an apocalyptic number.

10871967691 is a deficient number, since it is larger than the sum of its proper divisors (836305221).

10871967691 is an equidigital number, since it uses as much as digits as its factorization.

10871967691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836305220.

The product of its (nonzero) digits is 1143072, while the sum is 55.

The spelling of 10871967691 in words is "ten billion, eight hundred seventy-one million, nine hundred sixty-seven thousand, six hundred ninety-one".