6645077052 has 48 divisors (see below), whose sum is σ = 16108878240. Its totient is φ = 2129440768.

The previous prime is 6645077017. The next prime is 6645077071. The reversal of 6645077052 is 2507705466.

It is a junction number, because it is equal to n+sod(n) for n = 6645076995 and 6645077013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40108 + ... + 122060.

It is an arithmetic number, because the mean of its divisors is an integer number (335601630).

Almost surely, 2^6645077052 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 6645077052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8054439120).

6645077052 is an abundant number, since it is smaller than the sum of its proper divisors (9463801188).

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

6645077052 is a wasteful number, since it uses less digits than its factorization.

6645077052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82222 (or 82220 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The square root of 6645077052 is about 81517.3420322326. The cubic root of 6645077052 is about 1880.0382001443.

The spelling of 6645077052 in words is "six billion, six hundred forty-five million, seventy-seven thousand, fifty-two".