791936198591 has 16 divisors (see below), whose sum is σ = 859287968640. Its totient is φ = 728133396480.

The previous prime is 791936198569. The next prime is 791936198593. The reversal of 791936198591 is 195891639197.

It is a cyclic number.

It is not a de Polignac number, because 791936198591 - 2⁶ = 791936198527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791936198593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7801250 + ... + 7902111.

It is an arithmetic number, because the mean of its divisors is an integer number (53705498040).

Almost surely, 2^791936198591 is an apocalyptic number.

791936198591 is a deficient number, since it is larger than the sum of its proper divisors (67351770049).

791936198591 is a wasteful number, since it uses less digits than its factorization.

791936198591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15703474.

The product of its digits is 33067440, while the sum is 68.

The spelling of 791936198591 in words is "seven hundred ninety-one billion, nine hundred thirty-six million, one hundred ninety-eight thousand, five hundred ninety-one".