10691111807 has 4 divisors (see below), whose sum is σ = 10691871336. Its totient is φ = 10690352280.

The previous prime is 10691111803. The next prime is 10691111813. The reversal of 10691111807 is 70811119601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70811119601 = 73 ⋅970015337.

It is a cyclic number.

It is not a de Polignac number, because 10691111807 - 2² = 10691111803 is a prime.

It is a super-2 number, since 2×10691111807² (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 (10691111803) 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, 358244 + ... + 386937.

It is an arithmetic number, because the mean of its divisors is an integer number (2672967834).

Almost surely, 2^10691111807 is an apocalyptic number.

10691111807 is a deficient number, since it is larger than the sum of its proper divisors (759529).

10691111807 is an equidigital number, since it uses as much as digits as its factorization.

10691111807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759528.

The product of its (nonzero) digits is 3024, while the sum is 35.

The spelling of 10691111807 in words is "ten billion, six hundred ninety-one million, one hundred eleven thousand, eight hundred seven".