4891843378791 has 12 divisors (see below), whose sum is σ = 7437890517720. Its totient is φ = 3089585291760.

The previous prime is 4891843378771. The next prime is 4891843378813. The reversal of 4891843378791 is 1978733481984.

4891843378791 is a `hidden beast` number, since 4 + 8 + 9 + 184 + 3 + 378 + 79 + 1 = 666.

It is not a de Polignac number, because 4891843378791 - 2⁷ = 4891843378663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891843378711) 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, 14303635440 + ... + 14303635781.

It is an arithmetic number, because the mean of its divisors is an integer number (619824209810).

Almost surely, 2^{4891843378791} is an apocalyptic number.

4891843378791 is a deficient number, since it is larger than the sum of its proper divisors (2546047138929).

4891843378791 is a wasteful number, since it uses less digits than its factorization.

4891843378791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607271246 (or 28607271243 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 4891843378791 in words is "four trillion, eight hundred ninety-one billion, eight hundred forty-three million, three hundred seventy-eight thousand, seven hundred ninety-one".