42843615864 has 128 divisors (see below), whose sum is σ = 123952012800. Its totient is φ = 12087636480.

The previous prime is 42843615809. The next prime is 42843615887. The reversal of 42843615864 is 46851634824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5617974 + ... + 5625594.

It is an arithmetic number, because the mean of its divisors is an integer number (968375100).

Almost surely, 2^42843615864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42843615864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61976006400).

42843615864 is an abundant number, since it is smaller than the sum of its proper divisors (81108396936).

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

42843615864 is a wasteful number, since it uses less digits than its factorization.

42843615864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053 (or 8049 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 51.

The spelling of 42843615864 in words is "forty-two billion, eight hundred forty-three million, six hundred fifteen thousand, eight hundred sixty-four".