791244403233121 has 4 divisors (see below), whose sum is σ = 794396771373744. Its totient is φ = 788092035092500.

The previous prime is 791244403233091. The next prime is 791244403233161. The reversal of 791244403233121 is 121332304442197.

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 791244403233121 - 2¹⁹ = 791244402708833 is a prime.

It is a super-3 number, since 3×791244403233121³ (a number of 46 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791244403233161) 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, 1576184069935 + ... + 1576184070436.

It is an arithmetic number, because the mean of its divisors is an integer number (198599192843436).

Almost surely, 2^{791244403233121} is an apocalyptic number.

It is an amenable number.

791244403233121 is a deficient number, since it is larger than the sum of its proper divisors (3152368140623).

791244403233121 is a wasteful number, since it uses less digits than its factorization.

791244403233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152368140622.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 791244403233121 in words is "seven hundred ninety-one trillion, two hundred forty-four billion, four hundred three million, two hundred thirty-three thousand, one hundred twenty-one".