11334742191 has 24 divisors (see below), whose sum is σ = 16967274480. Its totient is φ = 7282872576.

The previous prime is 11334742187. The next prime is 11334742213. The reversal of 11334742191 is 19124743311.

It is a happy number.

11334742191 is a `hidden beast` number, since 113 + 34 + 7 + 421 + 91 = 666.

It is not a de Polignac number, because 11334742191 - 2² = 11334742187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11334742121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108375 + ... + 185511.

It is an arithmetic number, because the mean of its divisors is an integer number (706969770).

Almost surely, 2^11334742191 is an apocalyptic number.

11334742191 is a deficient number, since it is larger than the sum of its proper divisors (5632532289).

11334742191 is a wasteful number, since it uses less digits than its factorization.

11334742191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77735 (or 77732 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The spelling of 11334742191 in words is "eleven billion, three hundred thirty-four million, seven hundred forty-two thousand, one hundred ninety-one".