840618683868 has 48 divisors (see below), whose sum is σ = 1963695537440. Its totient is φ = 279884657664.

The previous prime is 840618683851. The next prime is 840618683869. The reversal of 840618683868 is 868386816048.

It is a junction number, because it is equal to n+sod(n) for n = 840618683799 and 840618683808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840618683869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103917168 + ... + 103925256.

Almost surely, 2^840618683868 is an apocalyptic number.

It is an amenable number.

840618683868 is an abundant number, since it is smaller than the sum of its proper divisors (1123076853572).

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

840618683868 is a wasteful number, since it uses less digits than its factorization.

840618683868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16966 (or 16964 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 66.

The spelling of 840618683868 in words is "eight hundred forty billion, six hundred eighteen million, six hundred eighty-three thousand, eight hundred sixty-eight".