191108211795 has 12 divisors (see below), whose sum is σ = 331254233856. Its totient is φ = 101924379600.

The previous prime is 191108211779. The next prime is 191108211797. The reversal of 191108211795 is 597112801191.

It is not a de Polignac number, because 191108211795 - 2⁴ = 191108211779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4246849151 = 191108211795 / (1 + 9 + 1 + 1 + 0 + 8 + 2 + 1 + 1 + 7 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 191108211795.

It is not an unprimeable number, because it can be changed into a prime (191108211797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2123424531 + ... + 2123424620.

It is an arithmetic number, because the mean of its divisors is an integer number (27604519488).

Almost surely, 2^191108211795 is an apocalyptic number.

191108211795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

191108211795 is a deficient number, since it is larger than the sum of its proper divisors (140146022061).

191108211795 is a wasteful number, since it uses less digits than its factorization.

191108211795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246849162 (or 4246849159 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 45.

The spelling of 191108211795 in words is "one hundred ninety-one billion, one hundred eight million, two hundred eleven thousand, seven hundred ninety-five".