8066278243 has 4 divisors (see below), whose sum is σ = 8144591728. Its totient is φ = 7987964760.

The previous prime is 8066278219. The next prime is 8066278247. The reversal of 8066278243 is 3428726608.

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

It is a cyclic number.

It is not a de Polignac number, because 8066278243 - 2⁹ = 8066277731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8066278193 and 8066278202.

It is not an unprimeable number, because it can be changed into a prime (8066278247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39156588 + ... + 39156793.

It is an arithmetic number, because the mean of its divisors is an integer number (2036147932).

Almost surely, 2^8066278243 is an apocalyptic number.

8066278243 is a deficient number, since it is larger than the sum of its proper divisors (78313485).

8066278243 is a wasteful number, since it uses less digits than its factorization.

8066278243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78313484.

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 8066278243 is about 89812.4615128658. The cubic root of 8066278243 is about 2005.5080039378.

The spelling of 8066278243 in words is "eight billion, sixty-six million, two hundred seventy-eight thousand, two hundred forty-three".