216466606664612 has 12 divisors (see below), whose sum is σ = 381229406005980. Its totient is φ = 107543919234336.

The previous prime is 216466606664557. The next prime is 216466606664663.

216466606664612 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 115180417341796 + 101286189322816 = 10732214^2 + 10064104^2 .

It is a super-2 number, since 2×216466606664612² (a number of 29 digits) contains 22 as substring.

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, 172346023787 + ... + 172346025042.

It is an arithmetic number, because the mean of its divisors is an integer number (31769117167165).

Almost surely, 2^{216466606664612} is an apocalyptic number.

It is an amenable number.

216466606664612 is a deficient number, since it is larger than the sum of its proper divisors (164762799341368).

216466606664612 is a wasteful number, since it uses less digits than its factorization.

216466606664612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344692048990 (or 344692048988 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 62.

The spelling of 216466606664612 in words is "two hundred sixteen trillion, four hundred sixty-six billion, six hundred six million, six hundred sixty-four thousand, six hundred twelve".