218126650343 has 4 divisors (see below), whose sum is σ = 249287600400. Its totient is φ = 186965700288.

The previous prime is 218126650331. The next prime is 218126650363. The reversal of 218126650343 is 343056621812.

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

It is a cyclic number.

It is not a de Polignac number, because 218126650343 - 2¹⁶ = 218126584807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218126650343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218126650363) 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, 15580475018 + ... + 15580475031.

It is an arithmetic number, because the mean of its divisors is an integer number (62321900100).

Almost surely, 2^218126650343 is an apocalyptic number.

218126650343 is a deficient number, since it is larger than the sum of its proper divisors (31160950057).

218126650343 is an equidigital number, since it uses as much as digits as its factorization.

218126650343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31160950056.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 218126650343 in words is "two hundred eighteen billion, one hundred twenty-six million, six hundred fifty thousand, three hundred forty-three".