840711338456 has 32 divisors (see below), whose sum is σ = 1719681727680. Its totient is φ = 382131540000.

The previous prime is 840711338443. The next prime is 840711338459. The reversal of 840711338456 is 654833117048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840711338459) 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, 4056995 + ... + 4259181.

It is an arithmetic number, because the mean of its divisors is an integer number (53740053990).

Almost surely, 2^840711338456 is an apocalyptic number.

It is an amenable number.

840711338456 is an abundant number, since it is smaller than the sum of its proper divisors (878970389224).

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

840711338456 is a wasteful number, since it uses less digits than its factorization.

840711338456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249455 (or 249451 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 840711338456 in words is "eight hundred forty billion, seven hundred eleven million, three hundred thirty-eight thousand, four hundred fifty-six".