5611111440 has 160 divisors (see below), whose sum is σ = 19046745216. Its totient is φ = 1355182080.

The previous prime is 5611111421. The next prime is 5611111447. The reversal of 5611111440 is 441111165.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5611111440.

It is not an unprimeable number, because it can be changed into a prime (5611111447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 727444 + ... + 735116.

Almost surely, 2^5611111440 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 5611111440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9523372608).

5611111440 is an abundant number, since it is smaller than the sum of its proper divisors (13435633776).

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

5611111440 is a wasteful number, since it uses less digits than its factorization.

5611111440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977 (or 7971 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 5611111440 is about 74907.3523761186. The cubic root of 5611111440 is about 1776.9817384817.

The spelling of 5611111440 in words is "five billion, six hundred eleven million, one hundred eleven thousand, four hundred forty".