218218963911 has 16 divisors (see below), whose sum is σ = 324144881760. Its totient is φ = 129657951360.

The previous prime is 218218963871. The next prime is 218218963973. The reversal of 218218963911 is 119369812812.

It is not a de Polignac number, because 218218963911 - 2⁶ = 218218963847 is a prime.

It is a super-3 number, since 3×218218963911³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218218963811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96470560 + ... + 96472821.

It is an arithmetic number, because the mean of its divisors is an integer number (20259055110).

Almost surely, 2^218218963911 is an apocalyptic number.

218218963911 is a deficient number, since it is larger than the sum of its proper divisors (105925917849).

218218963911 is a wasteful number, since it uses less digits than its factorization.

218218963911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192943426.

The product of its digits is 373248, while the sum is 51.

The spelling of 218218963911 in words is "two hundred eighteen billion, two hundred eighteen million, nine hundred sixty-three thousand, nine hundred eleven".