216654456612 has 48 divisors (see below), whose sum is σ = 551516442624. Its totient is φ = 65649012000.

The previous prime is 216654456611. The next prime is 216654456643.

It is a happy number.

216654456612 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (216654456611) 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, 2881537 + ... + 2955767.

It is an arithmetic number, because the mean of its divisors is an integer number (11489925888).

Almost surely, 2^216654456612 is an apocalyptic number.

216654456612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216654456612 is an abundant number, since it is smaller than the sum of its proper divisors (334861986012).

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

216654456612 is a wasteful number, since it uses less digits than its factorization.

216654456612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96360 (or 96358 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The spelling of 216654456612 in words is "two hundred sixteen billion, six hundred fifty-four million, four hundred fifty-six thousand, six hundred twelve".