216112211077266 has 48 divisors (see below), whose sum is σ = 535780517812800. Its totient is φ = 61671863065824.

The previous prime is 216112211077171. The next prime is 216112211077351. The reversal of 216112211077266 is 662770112211612.

216112211077266 is a `hidden beast` number, since 2 + 1 + 61 + 1 + 221 + 107 + 7 + 266 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1034380636 + ... + 1034589543.

It is an arithmetic number, because the mean of its divisors is an integer number (11162094121100).

Almost surely, 2^{216112211077266} is an apocalyptic number.

216112211077266 is an abundant number, since it is smaller than the sum of its proper divisors (319668306735534).

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

216112211077266 is a wasteful number, since it uses less digits than its factorization.

216112211077266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068971023 (or 2068971020 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

Adding to 216112211077266 its reverse (662770112211612), we get a palindrome (878882323288878).

The spelling of 216112211077266 in words is "two hundred sixteen trillion, one hundred twelve billion, two hundred eleven million, seventy-seven thousand, two hundred sixty-six".