218242522319 has 4 divisors (see below), whose sum is σ = 218392725096. Its totient is φ = 218092319544.

The previous prime is 218242522301. The next prime is 218242522339. The reversal of 218242522319 is 913225242812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218242522319 is a prime.

It is a super-2 number, since 2×218242522319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218242522339) 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, 75099209 + ... + 75102114.

It is an arithmetic number, because the mean of its divisors is an integer number (54598181274).

Almost surely, 2^218242522319 is an apocalyptic number.

218242522319 is a deficient number, since it is larger than the sum of its proper divisors (150202777).

218242522319 is a wasteful number, since it uses less digits than its factorization.

218242522319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150202776.

The product of its digits is 138240, while the sum is 41.

The spelling of 218242522319 in words is "two hundred eighteen billion, two hundred forty-two million, five hundred twenty-two thousand, three hundred nineteen".