2171611632 has 20 divisors (see below), whose sum is σ = 5609996840. Its totient is φ = 723870528.

The previous prime is 2171611627. The next prime is 2171611633. The reversal of 2171611632 is 2361161712.

It is a self number, because there is not a number n which added to its sum of digits gives 2171611632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171611633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22620907 + ... + 22621002.

It is an arithmetic number, because the mean of its divisors is an integer number (280499842).

Almost surely, 2^2171611632 is an apocalyptic number.

It is an amenable number.

2171611632 is an abundant number, since it is smaller than the sum of its proper divisors (3438385208).

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

2171611632 is a wasteful number, since it uses less digits than its factorization.

2171611632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45241920 (or 45241914 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 2171611632 is about 46600.5539881234. The cubic root of 2171611632 is about 1294.9730185242.

The spelling of 2171611632 in words is "two billion, one hundred seventy-one million, six hundred eleven thousand, six hundred thirty-two".