791681911788 has 24 divisors (see below), whose sum is σ = 1847327150592. Its totient is φ = 263884062544.

The previous prime is 791681911763. The next prime is 791681911789. The reversal of 791681911788 is 887119186197.

It is a super-2 number, since 2×791681911788² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (791681911789) 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 7 ways as a sum of consecutive naturals, for example, 901920 + ... + 1548167.

It is an arithmetic number, because the mean of its divisors is an integer number (76971964608).

Almost surely, 2^791681911788 is an apocalyptic number.

It is an amenable number.

791681911788 is an abundant number, since it is smaller than the sum of its proper divisors (1055645238804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

791681911788 is a wasteful number, since it uses less digits than its factorization.

791681911788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477021 (or 2477019 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 66.

The spelling of 791681911788 in words is "seven hundred ninety-one billion, six hundred eighty-one million, nine hundred eleven thousand, seven hundred eighty-eight".