2171083512 has 144 divisors (see below), whose sum is σ = 6083952120. Its totient is φ = 645315840.

The previous prime is 2171083489. The next prime is 2171083529. The reversal of 2171083512 is 2153801712.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2171083512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3897538 + ... + 3898094.

Almost surely, 2^2171083512 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 2171083512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041976060).

2171083512 is an abundant number, since it is smaller than the sum of its proper divisors (3912868608).

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

2171083512 is a wasteful number, since it uses less digits than its factorization.

2171083512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 2171083512 is about 46594.8871873299. The cubic root of 2171083512 is about 1294.8680340375.

The spelling of 2171083512 in words is "two billion, one hundred seventy-one million, eighty-three thousand, five hundred twelve".