8643022078 has 4 divisors (see below), whose sum is σ = 12964533120. Its totient is φ = 4321511038.

The previous prime is 8643022051. The next prime is 8643022111. The reversal of 8643022078 is 8702203468.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8643022078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160755518 + ... + 2160755521.

It is an arithmetic number, because the mean of its divisors is an integer number (3241133280).

Almost surely, 2^8643022078 is an apocalyptic number.

8643022078 is a deficient number, since it is larger than the sum of its proper divisors (4321511042).

8643022078 is a wasteful number, since it uses less digits than its factorization.

8643022078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321511041.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 8643022078 is about 92967.8550790541. The cubic root of 8643022078 is about 2052.2103525997.

The spelling of 8643022078 in words is "eight billion, six hundred forty-three million, twenty-two thousand, seventy-eight".