5611122720 has 576 divisors, whose sum is σ = 23181500160. Its totient is φ = 1255108608.

The previous prime is 5611122709. The next prime is 5611122721. The reversal of 5611122720 is 272211165.

5611122720 is a `hidden beast` number, since 5 + 611 + 1 + 2 + 27 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (5611122721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14424286 + ... + 14424674.

It is an arithmetic number, because the mean of its divisors is an integer number (40245660).

Almost surely, 2^5611122720 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 5611122720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11590750080).

5611122720 is an abundant number, since it is smaller than the sum of its proper divisors (17570377440).

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

5611122720 is a wasteful number, since it uses less digits than its factorization.

5611122720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 5611122720 is about 74907.4276690903. The cubic root of 5611122720 is about 1776.9829292345.

Adding to 5611122720 its reverse (272211165), we get a palindrome (5883333885).

The spelling of 5611122720 in words is "five billion, six hundred eleven million, one hundred twenty-two thousand, seven hundred twenty".