791121121197 has 64 divisors (see below), whose sum is σ = 1231174391040. Its totient is φ = 446549196800.

The previous prime is 791121121121. The next prime is 791121121261.

791121121197 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 791121121197 - 2²³ = 791112732589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791121121397) 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 63 ways as a sum of consecutive naturals, for example, 40625179 + ... + 40644647.

It is an arithmetic number, because the mean of its divisors is an integer number (19237099860).

Almost surely, 2^791121121197 is an apocalyptic number.

It is an amenable number.

791121121197 is a deficient number, since it is larger than the sum of its proper divisors (440053269843).

791121121197 is a wasteful number, since it uses less digits than its factorization.

791121121197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20254.

The product of its digits is 15876, while the sum is 42.

The spelling of 791121121197 in words is "seven hundred ninety-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred ninety-seven".