5261659560 has 320 divisors, whose sum is σ = 18302518080. Its totient is φ = 1360488960.

The previous prime is 5261659547. The next prime is 5261659577. The reversal of 5261659560 is 659561625.

5261659560 is a `hidden beast` number, since 5 + 26 + 1 + 65 + 9 + 560 = 666.

It is a super-2 number, since 2×5261659560² = 55370122650678787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 32280039 + ... + 32280201.

It is an arithmetic number, because the mean of its divisors is an integer number (57195369).

Almost surely, 2^5261659560 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 5261659560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9151259040).

5261659560 is an abundant number, since it is smaller than the sum of its proper divisors (13040858520).

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

5261659560 is an equidigital number, since it uses as much as digits as its factorization.

5261659560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 5261659560 is about 72537.2977164162. The cubic root of 5261659560 is about 1739.2990041905.

The spelling of 5261659560 in words is "five billion, two hundred sixty-one million, six hundred fifty-nine thousand, five hundred sixty".