2130665472 has 420 divisors, whose sum is σ = 7255375380. Its totient is φ = 621084672.

The previous prime is 2130665447. The next prime is 2130665473. The reversal of 2130665472 is 2745660312.

2130665472 is a `hidden beast` number, since 21 + 30 + 66 + 547 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130665473) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 112140279 + ... + 112140297.

Almost surely, 2^2130665472 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 2130665472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3627687690).

2130665472 is an abundant number, since it is smaller than the sum of its proper divisors (5124709908).

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

2130665472 is an equidigital number, since it uses as much as digits as its factorization.

2130665472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 2130665472 is about 46159.1320542317. The cubic root of 2130665472 is about 1286.7823323344.

The spelling of 2130665472 in words is "two billion, one hundred thirty million, six hundred sixty-five thousand, four hundred seventy-two".