2660505330 has 128 divisors (see below), whose sum is σ = 7419525120. Its totient is φ = 598026240.

The previous prime is 2660505317. The next prime is 2660505361. The reversal of 2660505330 is 335050662.

2660505330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2660505330² = 14156577221916817800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4297761 + ... + 4298379.

It is an arithmetic number, because the mean of its divisors is an integer number (57965040).

Almost surely, 2^2660505330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2660505330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3709762560).

2660505330 is an abundant number, since it is smaller than the sum of its proper divisors (4759019790).

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

2660505330 is a wasteful number, since it uses less digits than its factorization.

2660505330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 2660505330 is about 51580.0865644873. The cubic root of 2660505330 is about 1385.6537170384.

Adding to 2660505330 its reverse (335050662), we get a palindrome (2995555992).

The spelling of 2660505330 in words is "two billion, six hundred sixty million, five hundred five thousand, three hundred thirty".