840073523648 has 56 divisors (see below), whose sum is σ = 1671951187968. Its totient is φ = 418795266816.

The previous prime is 840073523621. The next prime is 840073523671. The reversal of 840073523648 is 846325370048.

It is a junction number, because it is equal to n+sod(n) for n = 840073523596 and 840073523605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123120365 + ... + 123127187.

Almost surely, 2^840073523648 is an apocalyptic number.

It is an amenable number.

840073523648 is a deficient number, since it is larger than the sum of its proper divisors (831877664320).

840073523648 is a wasteful number, since it uses less digits than its factorization.

840073523648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241 (or 12231 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 840073523648 in words is "eight hundred forty billion, seventy-three million, five hundred twenty-three thousand, six hundred forty-eight".