216556995096 has 512 divisors, whose sum is σ = 702172800000. Its totient is φ = 61279358976.

The previous prime is 216556995059. The next prime is 216556995131. The reversal of 216556995096 is 690599655612.

216556995096 is a `hidden beast` number, since 2 + 1 + 65 + 5 + 69 + 9 + 509 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 280150966 + ... + 280151738.

It is an arithmetic number, because the mean of its divisors is an integer number (1371431250).

Almost surely, 2^216556995096 is an apocalyptic number.

216556995096 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216556995096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351086400000).

216556995096 is an abundant number, since it is smaller than the sum of its proper divisors (485615804904).

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

216556995096 is a wasteful number, since it uses less digits than its factorization.

216556995096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 39366000, while the sum is 63.

The spelling of 216556995096 in words is "two hundred sixteen billion, five hundred fifty-six million, nine hundred ninety-five thousand, ninety-six".