5638211712 has 160 divisors (see below), whose sum is σ = 19176505920. Its totient is φ = 1610896896.

The previous prime is 5638211701. The next prime is 5638211713. The reversal of 5638211712 is 2171128365.

5638211712 is a `hidden beast` number, since 5 + 638 + 2 + 1 + 1 + 7 + 12 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (5638211713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33733 + ... + 111419.

It is an arithmetic number, because the mean of its divisors is an integer number (119853162).

Almost surely, 2^5638211712 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 5638211712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9588252960).

5638211712 is an abundant number, since it is smaller than the sum of its proper divisors (13538294208).

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

5638211712 is an equidigital number, since it uses as much as digits as its factorization.

5638211712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77720 (or 77699 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 5638211712 is about 75088.0264223265. The cubic root of 5638211712 is about 1779.8379383658.

The spelling of 5638211712 in words is "five billion, six hundred thirty-eight million, two hundred eleven thousand, seven hundred twelve".