218708291345 has 8 divisors (see below), whose sum is σ = 262452464064. Its totient is φ = 174964956784.

The previous prime is 218708291339. The next prime is 218708291359. The reversal of 218708291345 is 543192807812.

218708291345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 218708291345 - 2³⁰ = 217634549521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218708291293 and 218708291302.

It is an unprimeable number.

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, 872462 + ... + 1094808.

It is an arithmetic number, because the mean of its divisors is an integer number (32806558008).

Almost surely, 2^218708291345 is an apocalyptic number.

It is an amenable number.

218708291345 is a deficient number, since it is larger than the sum of its proper divisors (43744172719).

218708291345 is a wasteful number, since it uses less digits than its factorization.

218708291345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419079.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 218708291345 in words is "two hundred eighteen billion, seven hundred eight million, two hundred ninety-one thousand, three hundred forty-five".