5611531328 has 56 divisors (see below), whose sum is σ = 12064057152. Its totient is φ = 2574365184.

The previous prime is 5611531279. The next prime is 5611531357. The reversal of 5611531328 is 8231351165.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118751 + ... + 159137.

It is an arithmetic number, because the mean of its divisors is an integer number (215429592).

Almost surely, 2^5611531328 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 5611531328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032028576).

5611531328 is an abundant number, since it is smaller than the sum of its proper divisors (6452525824).

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

5611531328 is a wasteful number, since it uses less digits than its factorization.

5611531328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40579 (or 40569 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 5611531328 is about 74910.1550392201. The cubic root of 5611531328 is about 1777.0260621245.

The spelling of 5611531328 in words is "five billion, six hundred eleven million, five hundred thirty-one thousand, three hundred twenty-eight".