10691111813 has 2 divisors, whose sum is σ = 10691111814. Its totient is φ = 10691111812.

The previous prime is 10691111803. The next prime is 10691111819. The reversal of 10691111813 is 31811119601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9761044804 + 930067009 = 98798^2 + 30497^2 .

It is a cyclic number.

It is not a de Polignac number, because 10691111813 - 2²⁴ = 10674334597 is a prime.

It is a super-2 number, since 2×10691111813² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10691111813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10691111819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345555906 + 5345555907.

It is an arithmetic number, because the mean of its divisors is an integer number (5345555907).

Almost surely, 2^10691111813 is an apocalyptic number.

It is an amenable number.

10691111813 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691111813 is an equidigital number, since it uses as much as digits as its factorization.

10691111813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 10691111813 in words is "ten billion, six hundred ninety-one million, one hundred eleven thousand, eight hundred thirteen".