1135565568 has 180 divisors, whose sum is σ = 3534754608. Its totient is φ = 361912320.

The previous prime is 1135565539. The next prime is 1135565581. The reversal of 1135565568 is 8655655311.

1135565568 is a `hidden beast` number, since 1 + 1 + 35 + 56 + 5 + 568 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 475738 + ... + 478118.

Almost surely, 2^1135565568 is an apocalyptic number.

1135565568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1135565568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767377304).

1135565568 is an abundant number, since it is smaller than the sum of its proper divisors (2399189040).

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

1135565568 is an equidigital number, since it uses as much as digits as its factorization.

1135565568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432 (or 2409 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 1135565568 is about 33698.1537773214. The cubic root of 1135565568 is about 1043.2876631013.

The spelling of 1135565568 in words is "one billion, one hundred thirty-five million, five hundred sixty-five thousand, five hundred sixty-eight".