218242364136 has 16 divisors (see below), whose sum is σ = 545605910400. Its totient is φ = 72747454704.

The previous prime is 218242364117. The next prime is 218242364147. The reversal of 218242364136 is 631463242812.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546715896 + ... + 4546715943.

It is an arithmetic number, because the mean of its divisors is an integer number (34100369400).

Almost surely, 2^218242364136 is an apocalyptic number.

It is an amenable number.

218242364136 is an abundant number, since it is smaller than the sum of its proper divisors (327363546264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218242364136 is a wasteful number, since it uses less digits than its factorization.

218242364136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9093431848 (or 9093431844 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The spelling of 218242364136 in words is "two hundred eighteen billion, two hundred forty-two million, three hundred sixty-four thousand, one hundred thirty-six".