2216418777238 has 4 divisors (see below), whose sum is σ = 3324628165860. Its totient is φ = 1108209388618.

The previous prime is 2216418777203. The next prime is 2216418777277. The reversal of 2216418777238 is 8327778146122.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554104694308 + ... + 554104694311.

It is an arithmetic number, because the mean of its divisors is an integer number (831157041465).

Almost surely, 2^{2216418777238} is an apocalyptic number.

2216418777238 is a deficient number, since it is larger than the sum of its proper divisors (1108209388622).

2216418777238 is a wasteful number, since it uses less digits than its factorization.

2216418777238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108209388621.

The product of its digits is 12644352, while the sum is 58.

The spelling of 2216418777238 in words is "two trillion, two hundred sixteen billion, four hundred eighteen million, seven hundred seventy-seven thousand, two hundred thirty-eight".