10191190811 has 4 divisors (see below), whose sum is σ = 10193160000. Its totient is φ = 10189221624.

The previous prime is 10191190673. The next prime is 10191190813. The reversal of 10191190811 is 11809119101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10191190811 - 2¹⁸ = 10190928667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10191190813) 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, 976811 + ... + 987188.

It is an arithmetic number, because the mean of its divisors is an integer number (2548290000).

Almost surely, 2^10191190811 is an apocalyptic number.

10191190811 is a deficient number, since it is larger than the sum of its proper divisors (1969189).

10191190811 is an equidigital number, since it uses as much as digits as its factorization.

10191190811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969188.

The product of its (nonzero) digits is 648, while the sum is 32.

The spelling of 10191190811 in words is "ten billion, one hundred ninety-one million, one hundred ninety thousand, eight hundred eleven".