216256017276 has 108 divisors (see below), whose sum is σ = 612343466280. Its totient is φ = 64245767040.

The previous prime is 216256017253. The next prime is 216256017277. The reversal of 216256017276 is 672710652612.

216256017276 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 560 + 17 + 2 + 76 = 666.

It is a super-2 number, since 2×216256017276² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216256017277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 436410 + ... + 789281.

It is an arithmetic number, because the mean of its divisors is an integer number (5669846910).

Almost surely, 2^216256017276 is an apocalyptic number.

216256017276 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

216256017276 is an abundant number, since it is smaller than the sum of its proper divisors (396087449004).

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

216256017276 is a wasteful number, since it uses less digits than its factorization.

216256017276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225756 (or 1225738 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

Adding to 216256017276 its reverse (672710652612), we get a palindrome (888966669888).

The spelling of 216256017276 in words is "two hundred sixteen billion, two hundred fifty-six million, seventeen thousand, two hundred seventy-six".