18065678847 has 16 divisors (see below), whose sum is σ = 26383955040. Its totient is φ = 10944453632.

The previous prime is 18065678837. The next prime is 18065678879. The reversal of 18065678847 is 74887656081.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18065678847 - 2¹² = 18065674751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18065678837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6105918 + ... + 6108875.

It is an arithmetic number, because the mean of its divisors is an integer number (1648997190).

Almost surely, 2^18065678847 is an apocalyptic number.

18065678847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18065678847 is a deficient number, since it is larger than the sum of its proper divisors (8318276193).

18065678847 is a wasteful number, since it uses less digits than its factorization.

18065678847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214842.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 18065678847 in words is "eighteen billion, sixty-five million, six hundred seventy-eight thousand, eight hundred forty-seven".