2175663140 has 24 divisors (see below), whose sum is σ = 5221591872. Its totient is φ = 745941600.

The previous prime is 2175663107. The next prime is 2175663169. The reversal of 2175663140 is 413665712.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2175663140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7770086 + ... + 7770365.

It is an arithmetic number, because the mean of its divisors is an integer number (217566328).

Almost surely, 2^2175663140 is an apocalyptic number.

2175663140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175663140 is an abundant number, since it is smaller than the sum of its proper divisors (3045928732).

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

2175663140 is a wasteful number, since it uses less digits than its factorization.

2175663140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540467 (or 15540465 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2175663140 is about 46644.0043306747. The cubic root of 2175663140 is about 1295.7778484553. Note that the first 3 decimals are identical.

The spelling of 2175663140 in words is "two billion, one hundred seventy-five million, six hundred sixty-three thousand, one hundred forty".