216255552612 has 36 divisors (see below), whose sum is σ = 554638900368. Its totient is φ = 65531985200.

The previous prime is 216255552581. The next prime is 216255552619.

It is a happy number.

216255552612 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (216255552619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74466714 + ... + 74469617.

Almost surely, 2^216255552612 is an apocalyptic number.

216255552612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216255552612 is an abundant number, since it is smaller than the sum of its proper divisors (338383347756).

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

216255552612 is a wasteful number, since it uses less digits than its factorization.

216255552612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148936360 (or 148936347 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

It can be divided in two parts, 216255 and 552612, that added together give a palindrome (768867).

The spelling of 216255552612 in words is "two hundred sixteen billion, two hundred fifty-five million, five hundred fifty-two thousand, six hundred twelve".