216601310466 has 16 divisors (see below), whose sum is σ = 481336245600. Its totient is φ = 72200436804.

The previous prime is 216601310459. The next prime is 216601310477. The reversal of 216601310466 is 664013106612.

It is a happy number.

216601310466 is a `hidden beast` number, since 2 + 1 + 6 + 60 + 131 + 0 + 466 = 666.

It is a super-2 number, since 2×216601310466² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 216601310466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005567636 + ... + 2005567743.

It is an arithmetic number, because the mean of its divisors is an integer number (30083515350).

Almost surely, 2^216601310466 is an apocalyptic number.

216601310466 is an abundant number, since it is smaller than the sum of its proper divisors (264734935134).

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

216601310466 is a wasteful number, since it uses less digits than its factorization.

216601310466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011135390 (or 4011135384 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 216601310466 in words is "two hundred sixteen billion, six hundred one million, three hundred ten thousand, four hundred sixty-six".