6863440578 has 16 divisors (see below), whose sum is σ = 14097878400. Its totient is φ = 2225980656.

The previous prime is 6863440499. The next prime is 6863440601. The reversal of 6863440578 is 8750443686.

It is a self number, because there is not a number n which added to its sum of digits gives 6863440578.

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, 15457978 + ... + 15458421.

It is an arithmetic number, because the mean of its divisors is an integer number (881117400).

Almost surely, 2^6863440578 is an apocalyptic number.

6863440578 is an abundant number, since it is smaller than the sum of its proper divisors (7234437822).

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

6863440578 is a wasteful number, since it uses less digits than its factorization.

6863440578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30916441.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The square root of 6863440578 is about 82845.8844964552. The cubic root of 6863440578 is about 1900.4099372165.

The spelling of 6863440578 in words is "six billion, eight hundred sixty-three million, four hundred forty thousand, five hundred seventy-eight".