2145216008 has 64 divisors (see below), whose sum is σ = 4405484160. Its totient is φ = 973357056.

The previous prime is 2145216001. The next prime is 2145216019. The reversal of 2145216008 is 8006125412.

It is not an unprimeable number, because it can be changed into a prime (2145216001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2217941 + ... + 2218907.

It is an arithmetic number, because the mean of its divisors is an integer number (68835690).

Almost surely, 2^2145216008 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 2145216008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2202742080).

2145216008 is an abundant number, since it is smaller than the sum of its proper divisors (2260268152).

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

2145216008 is a wasteful number, since it uses less digits than its factorization.

2145216008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2145216008 is about 46316.4766362900. The cubic root of 2145216008 is about 1289.7048797076.

The spelling of 2145216008 in words is "two billion, one hundred forty-five million, two hundred sixteen thousand, eight".