2168573568 has 64 divisors (see below), whose sum is σ = 6583177920. Its totient is φ = 619591680.

The previous prime is 2168573557. The next prime is 2168573591. The reversal of 2168573568 is 8653758612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×2168573568² = 9405422639656501248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2168573568.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400693 + ... + 406068.

It is an arithmetic number, because the mean of its divisors is an integer number (102862155).

Almost surely, 2^2168573568 is an apocalyptic number.

2168573568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2168573568 is an abundant number, since it is smaller than the sum of its proper divisors (4414604352).

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

2168573568 is an equidigital number, since it uses as much as digits as its factorization.

2168573568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806785 (or 806773 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 2168573568 is about 46567.9457137632. The cubic root of 2168573568 is about 1294.3688517203.

The spelling of 2168573568 in words is "two billion, one hundred sixty-eight million, five hundred seventy-three thousand, five hundred sixty-eight".