216562275766172 has 48 divisors (see below), whose sum is σ = 434574217082880. Its totient is φ = 92501851208832.

The previous prime is 216562275766147. The next prime is 216562275766217. The reversal of 216562275766172 is 271667572265612.

It is a junction number, because it is equal to n+sod(n) for n = 216562275766099 and 216562275766108.

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, 56033729 + ... + 59773767.

It is an arithmetic number, because the mean of its divisors is an integer number (9053629522560).

Almost surely, 2^{216562275766172} is an apocalyptic number.

It is an amenable number.

216562275766172 is an abundant number, since it is smaller than the sum of its proper divisors (218011941316708).

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

216562275766172 is a wasteful number, since it uses less digits than its factorization.

216562275766172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746970 (or 3746968 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 65.

The spelling of 216562275766172 in words is "two hundred sixteen trillion, five hundred sixty-two billion, two hundred seventy-five million, seven hundred sixty-six thousand, one hundred seventy-two".