5611335440 has 80 divisors (see below), whose sum is σ = 13385143296. Its totient is φ = 2186419200.

The previous prime is 5611335419. The next prime is 5611335467. The reversal of 5611335440 is 445331165.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 5611335397 and 5611335406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3813905 + ... + 3815375.

Almost surely, 2^5611335440 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 5611335440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6692571648).

5611335440 is an abundant number, since it is smaller than the sum of its proper divisors (7773807856).

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

5611335440 is a wasteful number, since it uses less digits than its factorization.

5611335440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 5611335440 is about 74908.8475415288. The cubic root of 5611335440 is about 1777.0053843385.

The spelling of 5611335440 in words is "five billion, six hundred eleven million, three hundred thirty-five thousand, four hundred forty".