8213811744 has 96 divisors (see below), whose sum is σ = 22615600896. Its totient is φ = 2607206400.

The previous prime is 8213811731. The next prime is 8213811751. The reversal of 8213811744 is 4471183128.

It is a tau number, because it is divible by the number of its divisors (96).

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, 142344 + ... + 191544.

It is an arithmetic number, because the mean of its divisors is an integer number (235579176).

Almost surely, 2^8213811744 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 8213811744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11307800448).

8213811744 is an abundant number, since it is smaller than the sum of its proper divisors (14401789152).

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

8213811744 is a wasteful number, since it uses less digits than its factorization.

8213811744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49298 (or 49290 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 8213811744 is about 90630.0818933758. The cubic root of 8213811744 is about 2017.6612267948.

The spelling of 8213811744 in words is "eight billion, two hundred thirteen million, eight hundred eleven thousand, seven hundred forty-four".