216224544536 has 128 divisors (see below), whose sum is σ = 552467381760. Its totient is φ = 76602240000.

The previous prime is 216224544509. The next prime is 216224544577. The reversal of 216224544536 is 635445422612.

It is a happy number.

216224544536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335036 + ... + 738036.

It is an arithmetic number, because the mean of its divisors is an integer number (4316151420).

Almost surely, 2^216224544536 is an apocalyptic number.

216224544536 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 216224544536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276233690880).

216224544536 is an abundant number, since it is smaller than the sum of its proper divisors (336242837224).

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

216224544536 is a wasteful number, since it uses less digits than its factorization.

216224544536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403105 (or 403101 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 44.

The spelling of 216224544536 in words is "two hundred sixteen billion, two hundred twenty-four million, five hundred forty-four thousand, five hundred thirty-six".