2216866838438 has 32 divisors (see below), whose sum is σ = 3924045447168. Its totient is φ = 919177567200.

The previous prime is 2216866838429. The next prime is 2216866838497. The reversal of 2216866838438 is 8348386686122.

2216866838438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815531 + ... + 2258057.

It is an arithmetic number, because the mean of its divisors is an integer number (122626420224).

Almost surely, 2^{2216866838438} is an apocalyptic number.

2216866838438 is a deficient number, since it is larger than the sum of its proper divisors (1707178608730).

2216866838438 is a wasteful number, since it uses less digits than its factorization.

2216866838438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446108.

The product of its digits is 127401984, while the sum is 65.

The spelling of 2216866838438 in words is "two trillion, two hundred sixteen billion, eight hundred sixty-six million, eight hundred thirty-eight thousand, four hundred thirty-eight".