216562936812 has 48 divisors (see below), whose sum is σ = 510813216480. Its totient is φ = 71402821632.

The previous prime is 216562936783. The next prime is 216562936817. The reversal of 216562936812 is 218639265612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216562936817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030398 + ... + 2134394.

It is an arithmetic number, because the mean of its divisors is an integer number (10641942010).

Almost surely, 2^216562936812 is an apocalyptic number.

It is an amenable number.

216562936812 is an abundant number, since it is smaller than the sum of its proper divisors (294250279668).

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

216562936812 is a wasteful number, since it uses less digits than its factorization.

216562936812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105890 (or 105888 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The spelling of 216562936812 in words is "two hundred sixteen billion, five hundred sixty-two million, nine hundred thirty-six thousand, eight hundred twelve".