216360204256 has 96 divisors (see below), whose sum is σ = 500222278080. Its totient is φ = 90173730816.

The previous prime is 216360204253. The next prime is 216360204283. The reversal of 216360204256 is 652402063612.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216360204253) 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, 19827730 + ... + 19838638.

It is an arithmetic number, because the mean of its divisors is an integer number (5210648730).

Almost surely, 2^216360204256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216360204256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250111139040).

216360204256 is an abundant number, since it is smaller than the sum of its proper divisors (283862073824).

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

216360204256 is a wasteful number, since it uses less digits than its factorization.

216360204256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13356 (or 13348 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 216360204256 its reverse (652402063612), we get a palindrome (868762267868).

The spelling of 216360204256 in words is "two hundred sixteen billion, three hundred sixty million, two hundred four thousand, two hundred fifty-six".