216612053056 has 63 divisors (see below), whose sum is σ = 500077597887. Its totient is φ = 92822567040.

The previous prime is 216612053033. The next prime is 216612053069. The reversal of 216612053056 is 650350216612.

The square root of 216612053056 is 465416.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26059141 + ... + 26067451.

It is an arithmetic number, because the mean of its divisors is an integer number (7937739649).

Almost surely, 2^216612053056 is an apocalyptic number.

216612053056 is the 465416-th square number.

It is an amenable number.

216612053056 is an abundant number, since it is smaller than the sum of its proper divisors (283465544831).

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

216612053056 is an frugal number, since it uses more digits than its factorization.

216612053056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16648 (or 8320 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 216612053056 its reverse (650350216612), we get a palindrome (866962269668).

The spelling of 216612053056 in words is "two hundred sixteen billion, six hundred twelve million, fifty-three thousand, fifty-six".