41191137891 has 12 divisors (see below), whose sum is σ = 59517488160. Its totient is φ = 27451907280.

The previous prime is 41191137863. The next prime is 41191137907. The reversal of 41191137891 is 19873119114.

41191137891 is a `hidden beast` number, since 4 + 1 + 191 + 1 + 378 + 91 = 666.

It is not a de Polignac number, because 41191137891 - 2⁷ = 41191137763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41191132891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 708075 + ... + 764036.

It is an arithmetic number, because the mean of its divisors is an integer number (4959790680).

Almost surely, 2^41191137891 is an apocalyptic number.

41191137891 is a deficient number, since it is larger than the sum of its proper divisors (18326350269).

41191137891 is a wasteful number, since it uses less digits than its factorization.

41191137891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475226 (or 1475223 counting only the distinct ones).

The product of its digits is 54432, while the sum is 45.

Adding to 41191137891 its sum of digits (45), we get a square (41191137936 = 202956²).

The spelling of 41191137891 in words is "forty-one billion, one hundred ninety-one million, one hundred thirty-seven thousand, eight hundred ninety-one".