840656656048 has 40 divisors (see below), whose sum is σ = 1785263610816. Its totient is φ = 380305665600.

The previous prime is 840656656043. The next prime is 840656656051.

840656656048 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×840656656048² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 840656655983 and 840656656001.

It is not an unprimeable number, because it can be changed into a prime (840656656043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11281486 + ... + 11355757.

Almost surely, 2^840656656048 is an apocalyptic number.

840656656048 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

840656656048 is an abundant number, since it is smaller than the sum of its proper divisors (944606954768).

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

840656656048 is a wasteful number, since it uses less digits than its factorization.

840656656048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22637473 (or 22637467 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 58.

The spelling of 840656656048 in words is "eight hundred forty billion, six hundred fifty-six million, six hundred fifty-six thousand, forty-eight".