2661120330 has 192 divisors, whose sum is σ = 7694507520. Its totient is φ = 585840640.

The previous prime is 2661120289. The next prime is 2661120331. The reversal of 2661120330 is 330211662.

It is a happy number.

It is a super-2 number, since 2×2661120330² = 14163122821478617800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2661120330.

It is not an unprimeable number, because it can be changed into a prime (2661120331) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1788847 + ... + 1790333.

It is an arithmetic number, because the mean of its divisors is an integer number (40075560).

Almost surely, 2^2661120330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2661120330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3847253760).

2661120330 is an abundant number, since it is smaller than the sum of its proper divisors (5033387190).

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

2661120330 is a wasteful number, since it uses less digits than its factorization.

2661120330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1554 counting only the distinct ones).

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

The square root of 2661120330 is about 51586.0478230306. The cubic root of 2661120330 is about 1385.7604776316.

Adding to 2661120330 its reverse (330211662), we get a palindrome (2991331992).

The spelling of 2661120330 in words is "two billion, six hundred sixty-one million, one hundred twenty thousand, three hundred thirty".