2218931444616 has 32 divisors (see below), whose sum is σ = 5549917320960. Its totient is φ = 739298653632.

The previous prime is 2218931444539. The next prime is 2218931444621. The reversal of 2218931444616 is 6164441398122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21520075 + ... + 21622938.

It is an arithmetic number, because the mean of its divisors is an integer number (173434916280).

Almost surely, 2^{2218931444616} is an apocalyptic number.

It is an amenable number.

2218931444616 is an abundant number, since it is smaller than the sum of its proper divisors (3330985876344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2218931444616 is a wasteful number, since it uses less digits than its factorization.

2218931444616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43145165 (or 43145161 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The spelling of 2218931444616 in words is "two trillion, two hundred eighteen billion, nine hundred thirty-one million, four hundred forty-four thousand, six hundred sixteen".