4811021568 has 90 divisors (see below), whose sum is σ = 14345657634. Its totient is φ = 1603666944.

The previous prime is 4811021563. The next prime is 4811021569. The reversal of 4811021568 is 8651201184.

4811021568 is a `hidden beast` number, since 4 + 81 + 10 + 2 + 1 + 568 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4522293504 + 288728064 = 67248^2 + 16992^2 .

It is a super-2 number, since 2×4811021568² = 46291857055522357248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4811021563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 95271 + ... + 136742.

Almost surely, 2^4811021568 is an apocalyptic number.

4811021568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4811021568 is an abundant number, since it is smaller than the sum of its proper divisors (9534636066).

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

4811021568 is an equidigital number, since it uses as much as digits as its factorization.

4811021568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232041 (or 232018 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 4811021568 is about 69361.5280108505. The cubic root of 4811021568 is about 1688.1554479007.

The spelling of 4811021568 in words is "four billion, eight hundred eleven million, twenty-one thousand, five hundred sixty-eight".