191054341811 has 4 divisors (see below), whose sum is σ = 191225385312. Its totient is φ = 190883298312.

The previous prime is 191054341771. The next prime is 191054341817. The reversal of 191054341811 is 118143450191.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118143450191 = 13 ⋅9087957707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191054341811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191054341817) 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, 85520075 + ... + 85522308.

It is an arithmetic number, because the mean of its divisors is an integer number (47806346328).

Almost surely, 2^191054341811 is an apocalyptic number.

191054341811 is a deficient number, since it is larger than the sum of its proper divisors (171043501).

191054341811 is a wasteful number, since it uses less digits than its factorization.

191054341811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171043500.

The product of its (nonzero) digits is 17280, while the sum is 38.

The spelling of 191054341811 in words is "one hundred ninety-one billion, fifty-four million, three hundred forty-one thousand, eight hundred eleven".