2218911317255 has 4 divisors (see below), whose sum is σ = 2662693580712. Its totient is φ = 1775129053800.

The previous prime is 2218911317243. The next prime is 2218911317263. The reversal of 2218911317255 is 5527131198122.

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

It is not a de Polignac number, because 2218911317255 - 2⁶ = 2218911317191 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 221891131721 + ... + 221891131730.

It is an arithmetic number, because the mean of its divisors is an integer number (665673395178).

Almost surely, 2^{2218911317255} is an apocalyptic number.

2218911317255 is a deficient number, since it is larger than the sum of its proper divisors (443782263457).

2218911317255 is an equidigital number, since it uses as much as digits as its factorization.

2218911317255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443782263456.

The product of its digits is 302400, while the sum is 47.

The spelling of 2218911317255 in words is "two trillion, two hundred eighteen billion, nine hundred eleven million, three hundred seventeen thousand, two hundred fifty-five".