216518226376 has 32 divisors (see below), whose sum is σ = 408857248800. Its totient is φ = 107492353920.

The previous prime is 216518226361. The next prime is 216518226383. The reversal of 216518226376 is 673622815612.

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, 466015 + ... + 806353.

It is an arithmetic number, because the mean of its divisors is an integer number (12776789025).

Almost surely, 2^216518226376 is an apocalyptic number.

It is an amenable number.

216518226376 is a deficient number, since it is larger than the sum of its proper divisors (192339022424).

216518226376 is a wasteful number, since it uses less digits than its factorization.

216518226376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340909 (or 340905 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The spelling of 216518226376 in words is "two hundred sixteen billion, five hundred eighteen million, two hundred twenty-six thousand, three hundred seventy-six".