12216566215632 has 80 divisors (see below), whose sum is σ = 33416731370880. Its totient is φ = 3832553066496.

The previous prime is 12216566215621. The next prime is 12216566215657. The reversal of 12216566215632 is 23651266561221.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 37339668 + ... + 37665420.

It is an arithmetic number, because the mean of its divisors is an integer number (417709142136).

Almost surely, 2^{12216566215632} is an apocalyptic number.

12216566215632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12216566215632 is an abundant number, since it is smaller than the sum of its proper divisors (21200165155248).

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

12216566215632 is a wasteful number, since it uses less digits than its factorization.

12216566215632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371740 (or 371734 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The spelling of 12216566215632 in words is "twelve trillion, two hundred sixteen billion, five hundred sixty-six million, two hundred fifteen thousand, six hundred thirty-two".