691846858340 has 48 divisors (see below), whose sum is σ = 1678191105024. Its totient is φ = 236781811200.

The previous prime is 691846858333. The next prime is 691846858361. The reversal of 691846858340 is 43858648196.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92489156 + ... + 92496635.

It is an arithmetic number, because the mean of its divisors is an integer number (34962314688).

Almost surely, 2^691846858340 is an apocalyptic number.

It is an amenable number.

691846858340 is an abundant number, since it is smaller than the sum of its proper divisors (986344246684).

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

691846858340 is a wasteful number, since it uses less digits than its factorization.

691846858340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184985828 (or 184985826 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 691846858340 in words is "six hundred ninety-one billion, eight hundred forty-six million, eight hundred fifty-eight thousand, three hundred forty".