2171008650 has 48 divisors (see below), whose sum is σ = 5396529600. Its totient is φ = 577599360.

The previous prime is 2171008649. The next prime is 2171008657. The reversal of 2171008650 is 568001712.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2171008657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49366 + ... + 82334.

It is an arithmetic number, because the mean of its divisors is an integer number (112427700).

Almost surely, 2^2171008650 is an apocalyptic number.

2171008650 is an abundant number, since it is smaller than the sum of its proper divisors (3225520950).

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

2171008650 is a wasteful number, since it uses less digits than its factorization.

2171008650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33423 (or 33418 counting only the distinct ones).

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

The square root of 2171008650 is about 46594.0838519227. The cubic root of 2171008650 is about 1294.8531509120.

The spelling of 2171008650 in words is "two billion, one hundred seventy-one million, eight thousand, six hundred fifty".