18218216067 has 8 divisors (see below), whose sum is σ = 24292960080. Its totient is φ = 12144474720.

The previous prime is 18218216017. The next prime is 18218216069. The reversal of 18218216067 is 76061281281.

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

It is not a de Polignac number, because 18218216067 - 2²⁶ = 18151107203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18218216069) 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 7 ways as a sum of consecutive naturals, for example, 207192 + ... + 281717.

It is an arithmetic number, because the mean of its divisors is an integer number (3036620010).

Almost surely, 2^18218216067 is an apocalyptic number.

18218216067 is a deficient number, since it is larger than the sum of its proper divisors (6074744013).

18218216067 is a wasteful number, since it uses less digits than its factorization.

18218216067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501333.

The product of its (nonzero) digits is 64512, while the sum is 42.

The spelling of 18218216067 in words is "eighteen billion, two hundred eighteen million, two hundred sixteen thousand, sixty-seven".