3609117216 has 288 divisors, whose sum is σ = 11284277760. Its totient is φ = 1120780800.

The previous prime is 3609117191. The next prime is 3609117217. The reversal of 3609117216 is 6127119063.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3609117217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59165826 + ... + 59165886.

It is an arithmetic number, because the mean of its divisors is an integer number (39181520).

Almost surely, 2^3609117216 is an apocalyptic number.

3609117216 is a gapful number since it is divisible by the number (36) 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 3609117216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5642138880).

3609117216 is an abundant number, since it is smaller than the sum of its proper divisors (7675160544).

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

3609117216 is a wasteful number, since it uses less digits than its factorization.

3609117216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 3609117216 is about 60075.9287568657. The cubic root of 3609117216 is about 1533.9115905094.

The spelling of 3609117216 in words is "three billion, six hundred nine million, one hundred seventeen thousand, two hundred sixteen".