2163065472 has 128 divisors (see below), whose sum is σ = 6463699200. Its totient is φ = 720928512.

The previous prime is 2163065461. The next prime is 2163065477. The reversal of 2163065472 is 2745603612.

It is a tau number, because it is divible by the number of its divisors (128).

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 (2163065477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276073 + ... + 283799.

It is an arithmetic number, because the mean of its divisors is an integer number (50497650).

Almost surely, 2^2163065472 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 2163065472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3231849600).

2163065472 is an abundant number, since it is smaller than the sum of its proper divisors (4300633728).

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

2163065472 is an frugal number, since it uses more digits than its factorization.

2163065472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7762 (or 7732 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 2163065472 is about 46508.7676895443. The cubic root of 2163065472 is about 1293.2720397022.

The spelling of 2163065472 in words is "two billion, one hundred sixty-three million, sixty-five thousand, four hundred seventy-two".