2166630000 has 100 divisors (see below), whose sum is σ = 6994267368. Its totient is φ = 577760000.

The previous prime is 2166629989. The next prime is 2166630043. The reversal of 2166630000 is 366612.

It is a tau number, because it is divible by the number of its divisors (100).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6111 + ... + 66110.

Almost surely, 2^2166630000 is an apocalyptic number.

2166630000 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 2166630000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3497133684).

2166630000 is an abundant number, since it is smaller than the sum of its proper divisors (4827637368).

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

2166630000 is an equidigital number, since it uses as much as digits as its factorization.

2166630000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72252 (or 72231 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2166630000 is about 46547.0729477161. The cubic root of 2166630000 is about 1293.9820466411.

Adding to 2166630000 its reverse (366612), we get a palindrome (2166996612).

The spelling of 2166630000 in words is "two billion, one hundred sixty-six million, six hundred thirty thousand".