218853356869 has 8 divisors (see below), whose sum is σ = 250210814400. Its totient is φ = 187519072416.

The previous prime is 218853356857. The next prime is 218853356879. The reversal of 218853356869 is 968653358812.

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 218853356869 - 2⁵ = 218853356837 is a prime.

It is a super-2 number, since 2×218853356869² (a number of 23 digits) contains 22 as substring.

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 218853356869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218853356879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5773024 + ... + 5810809.

It is an arithmetic number, because the mean of its divisors is an integer number (31276351800).

Almost surely, 2^218853356869 is an apocalyptic number.

It is an amenable number.

218853356869 is a deficient number, since it is larger than the sum of its proper divisors (31357457531).

218853356869 is a wasteful number, since it uses less digits than its factorization.

218853356869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11586539.

The product of its digits is 74649600, while the sum is 64.

The spelling of 218853356869 in words is "two hundred eighteen billion, eight hundred fifty-three million, three hundred fifty-six thousand, eight hundred sixty-nine".