2660505600 has 144 divisors (see below), whose sum is σ = 8795765160. Its totient is φ = 709427200.

The previous prime is 2660505599. The next prime is 2660505623. The reversal of 2660505600 is 65050662.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144940 + ... + 162260.

Almost surely, 2^2660505600 is an apocalyptic number.

2660505600 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 2660505600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4397882580).

2660505600 is an abundant number, since it is smaller than the sum of its proper divisors (6135259560).

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

2660505600 is a wasteful number, since it uses less digits than its factorization.

2660505600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17356 (or 17331 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2660505600 is about 51580.0891817763. The cubic root of 2660505600 is about 1385.6537639125.

The spelling of 2660505600 in words is "two billion, six hundred sixty million, five hundred five thousand, six hundred".