7278864243 has 8 divisors (see below), whose sum is σ = 11091602688. Its totient is φ = 4159350984.

The previous prime is 7278864217. The next prime is 7278864247. The reversal of 7278864243 is 3424688727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7278864243 - 2⁹ = 7278863731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7278864247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173306271 + ... + 173306312.

It is an arithmetic number, because the mean of its divisors is an integer number (1386450336).

Almost surely, 2^7278864243 is an apocalyptic number.

7278864243 is a deficient number, since it is larger than the sum of its proper divisors (3812738445).

7278864243 is a wasteful number, since it uses less digits than its factorization.

7278864243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346612593.

The product of its digits is 3612672, while the sum is 51.

The square root of 7278864243 is about 85316.2601325210. The cubic root of 7278864243 is about 1938.0034231926.

The spelling of 7278864243 in words is "seven billion, two hundred seventy-eight million, eight hundred sixty-four thousand, two hundred forty-three".