10100991911 has 4 divisors (see below), whose sum is σ = 10122621912. Its totient is φ = 10079361912.

The previous prime is 10100991883. The next prime is 10100991913. The reversal of 10100991911 is 11919900101.

10100991911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100991911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100991913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10814300 + ... + 10815233.

It is an arithmetic number, because the mean of its divisors is an integer number (2530655478).

Almost surely, 2^10100991911 is an apocalyptic number.

10100991911 is a deficient number, since it is larger than the sum of its proper divisors (21630001).

10100991911 is an equidigital number, since it uses as much as digits as its factorization.

10100991911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21630000.

The product of its (nonzero) digits is 729, while the sum is 32.

The spelling of 10100991911 in words is "ten billion, one hundred million, nine hundred ninety-one thousand, nine hundred eleven".