691441144196 has 12 divisors (see below), whose sum is σ = 1320024002640. Its totient is φ = 314291429160.

The previous prime is 691441144183. The next prime is 691441144201.

It is a happy number.

691441144196 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7857285686 + ... + 7857285773.

It is an arithmetic number, because the mean of its divisors is an integer number (110002000220).

Almost surely, 2^691441144196 is an apocalyptic number.

It is an amenable number.

691441144196 is a deficient number, since it is larger than the sum of its proper divisors (628582858444).

691441144196 is a wasteful number, since it uses less digits than its factorization.

691441144196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714571474 (or 15714571472 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The spelling of 691441144196 in words is "six hundred ninety-one billion, four hundred forty-one million, one hundred forty-four thousand, one hundred ninety-six".