10009191811 has 4 divisors (see below), whose sum is σ = 10535991400. Its totient is φ = 9482392224.

The previous prime is 10009191791. The next prime is 10009191823. The reversal of 10009191811 is 11819190001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11819190001 = 21773 ⋅542837.

It is a cyclic number.

It is not a de Polignac number, because 10009191811 - 2⁷ = 10009191683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10009192811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263399766 + ... + 263399803.

It is an arithmetic number, because the mean of its divisors is an integer number (2633997850).

Almost surely, 2^10009191811 is an apocalyptic number.

10009191811 is a deficient number, since it is larger than the sum of its proper divisors (526799589).

10009191811 is an equidigital number, since it uses as much as digits as its factorization.

10009191811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526799588.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 10009191811 in words is "ten billion, nine million, one hundred ninety-one thousand, eight hundred eleven".