5621116560 has 120 divisors (see below), whose sum is σ = 18391144320. Its totient is φ = 1420049664.

The previous prime is 5621116549. The next prime is 5621116561. The reversal of 5621116560 is 656111265.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×5621116560² = 63193902762212467200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5621116561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54201 + ... + 119079.

It is an arithmetic number, because the mean of its divisors is an integer number (153259536).

Almost surely, 2^5621116560 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 5621116560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9195572160).

5621116560 is an abundant number, since it is smaller than the sum of its proper divisors (12770027760).

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

5621116560 is a wasteful number, since it uses less digits than its factorization.

5621116560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64933 (or 64908 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 5621116560 is about 74974.1059299809. The cubic root of 5621116560 is about 1778.0372844900.

It can be divided in two parts, 56211 and 16560, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 5621116560 in words is "five billion, six hundred twenty-one million, one hundred sixteen thousand, five hundred sixty".