791168064081 has 4 divisors (see below), whose sum is σ = 1054890752112. Its totient is φ = 527445376052.

The previous prime is 791168064061. The next prime is 791168064083. The reversal of 791168064081 is 180460861197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 791168064081 - 2¹¹ = 791168062033 is a prime.

It is a super-2 number, since 2×791168064081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (791168064083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131861344011 + ... + 131861344016.

It is an arithmetic number, because the mean of its divisors is an integer number (263722688028).

Almost surely, 2^791168064081 is an apocalyptic number.

It is an amenable number.

791168064081 is a deficient number, since it is larger than the sum of its proper divisors (263722688031).

791168064081 is a wasteful number, since it uses less digits than its factorization.

791168064081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263722688030.

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 791168064081 in words is "seven hundred ninety-one billion, one hundred sixty-eight million, sixty-four thousand, eighty-one".