216935508056 has 16 divisors (see below), whose sum is σ = 407778653040. Its totient is φ = 108194533920.

The previous prime is 216935508047. The next prime is 216935508067. The reversal of 216935508056 is 650805539612.

It is a super-2 number, since 2×216935508056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216935507995 and 216935508013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34149140 + ... + 34155491.

It is an arithmetic number, because the mean of its divisors is an integer number (25486165815).

Almost surely, 2^216935508056 is an apocalyptic number.

It is an amenable number.

216935508056 is a deficient number, since it is larger than the sum of its proper divisors (190843144984).

216935508056 is a wasteful number, since it uses less digits than its factorization.

216935508056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68305034 (or 68305030 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 216935508056 in words is "two hundred sixteen billion, nine hundred thirty-five million, five hundred eight thousand, fifty-six".