2171529648 has 60 divisors (see below), whose sum is σ = 6302362248. Its totient is φ = 723841920.

The previous prime is 2171529631. The next prime is 2171529653. The reversal of 2171529648 is 8469251712.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275373 + ... + 283148.

Almost surely, 2^2171529648 is an apocalyptic number.

It is an amenable number.

2171529648 is an abundant number, since it is smaller than the sum of its proper divisors (4130832600).

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

2171529648 is an equidigital number, since it uses as much as digits as its factorization.

2171529648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558544 (or 558526 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2171529648 is about 46599.6743336260. The cubic root of 2171529648 is about 1294.9567221168.

The spelling of 2171529648 in words is "two billion, one hundred seventy-one million, five hundred twenty-nine thousand, six hundred forty-eight".