791111643019 has 4 divisors (see below), whose sum is σ = 791114635296. Its totient is φ = 791108650744.

The previous prime is 791111642987. The next prime is 791111643037. The reversal of 791111643019 is 910346111197.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 791111643019 - 2⁵ = 791111642987 is a prime.

It is a super-2 number, since 2×791111643019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791111643319) 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 3 ways as a sum of consecutive naturals, for example, 1056499 + ... + 1642684.

It is an arithmetic number, because the mean of its divisors is an integer number (197778658824).

Almost surely, 2^791111643019 is an apocalyptic number.

791111643019 is a deficient number, since it is larger than the sum of its proper divisors (2992277).

791111643019 is a wasteful number, since it uses less digits than its factorization.

791111643019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992276.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 791111643019 in words is "seven hundred ninety-one billion, one hundred eleven million, six hundred forty-three thousand, nineteen".