6661752552 has 256 divisors, whose sum is σ = 23263027200. Its totient is φ = 1719325440.

The previous prime is 6661752551. The next prime is 6661752569. The reversal of 6661752552 is 2552571666.

It is a junction number, because it is equal to n+sod(n) for n = 6661752498 and 6661752507.

It is not an unprimeable number, because it can be changed into a prime (6661752551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 920227 + ... + 927437.

It is an arithmetic number, because the mean of its divisors is an integer number (90871200).

Almost surely, 2^6661752552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6661752552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11631513600).

6661752552 is an abundant number, since it is smaller than the sum of its proper divisors (16601274648).

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

6661752552 is a wasteful number, since it uses less digits than its factorization.

6661752552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7293 (or 7283 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 6661752552 is about 81619.5598615920. The cubic root of 6661752552 is about 1881.6095081972.

The spelling of 6661752552 in words is "six billion, six hundred sixty-one million, seven hundred fifty-two thousand, five hundred fifty-two".