2660043100 has 216 divisors, whose sum is σ = 7005020400. Its totient is φ = 868608000.

The previous prime is 2660043097. The next prime is 2660043107. The reversal of 2660043100 is 13400662.

It is a super-2 number, since 2×2660043100² = 14151658587715220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660043107) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7621726 + ... + 7622074.

It is an arithmetic number, because the mean of its divisors is an integer number (32430650).

Almost surely, 2^2660043100 is an apocalyptic number.

2660043100 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 2660043100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3502510200).

2660043100 is an abundant number, since it is smaller than the sum of its proper divisors (4344977300).

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

2660043100 is a wasteful number, since it uses less digits than its factorization.

2660043100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2660043100 is about 51575.6056677961. The cubic root of 2660043100 is about 1385.5734656408.

Adding to 2660043100 its reverse (13400662), we get a palindrome (2673443762).

The spelling of 2660043100 in words is "two billion, six hundred sixty million, forty-three thousand, one hundred".