5638524864 has 112 divisors (see below), whose sum is σ = 17397984000. Its totient is φ = 1610988288.

The previous prime is 5638524841. The next prime is 5638524887. The reversal of 5638524864 is 4684258365.

It is an interprime number because it is at equal distance from previous prime (5638524841) and next prime (5638524887).

It is a tau number, because it is divible by the number of its divisors (112).

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23047 + ... + 108665.

Almost surely, 2^5638524864 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 5638524864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8698992000).

5638524864 is an abundant number, since it is smaller than the sum of its proper divisors (11759459136).

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

5638524864 is an equidigital number, since it uses as much as digits as its factorization.

5638524864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85655 (or 85631 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 51.

The square root of 5638524864 is about 75090.1116259658. Note that the first 3 decimals coincide. The cubic root of 5638524864 is about 1779.8708890908.

The spelling of 5638524864 in words is "five billion, six hundred thirty-eight million, five hundred twenty-four thousand, eight hundred sixty-four".