4091923708191 has 64 divisors (see below), whose sum is σ = 6646584522240. Its totient is φ = 2467454411520.

The previous prime is 4091923708157. The next prime is 4091923708277. The reversal of 4091923708191 is 1918073291904.

4091923708191 is a `hidden beast` number, since 4 + 0 + 9 + 192 + 370 + 81 + 9 + 1 = 666.

It is not a de Polignac number, because 4091923708191 - 2⁷ = 4091923708063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4091923708121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94991440 + ... + 95034506.

It is an arithmetic number, because the mean of its divisors is an integer number (103852883160).

Almost surely, 2^{4091923708191} is an apocalyptic number.

4091923708191 is a deficient number, since it is larger than the sum of its proper divisors (2554660814049).

4091923708191 is a wasteful number, since it uses less digits than its factorization.

4091923708191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44693 (or 44687 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 4091923708191 in words is "four trillion, ninety-one billion, nine hundred twenty-three million, seven hundred eight thousand, one hundred ninety-one".