2175520680 has 384 divisors, whose sum is σ = 7727166720. Its totient is φ = 549918720.

The previous prime is 2175520673. The next prime is 2175520703. The reversal of 2175520680 is 860255712.

It is a happy number.

2175520680 is a `hidden beast` number, since 2 + 1 + 75 + 520 + 68 + 0 = 666.

2175520680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21121509 + ... + 21121611.

It is an arithmetic number, because the mean of its divisors is an integer number (20122830).

Almost surely, 2^2175520680 is an apocalyptic number.

2175520680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2175520680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3863583360).

2175520680 is an abundant number, since it is smaller than the sum of its proper divisors (5551646040).

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

2175520680 is a wasteful number, since it uses less digits than its factorization.

2175520680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 2175520680 is about 46642.4772069409. The cubic root of 2175520680 is about 1295.7495658077.

The spelling of 2175520680 in words is "two billion, one hundred seventy-five million, five hundred twenty thousand, six hundred eighty".