6615256752 has 240 divisors, whose sum is σ = 21338044000. Its totient is φ = 1896099840.

The previous prime is 6615256709. The next prime is 6615256789. The reversal of 6615256752 is 2576525166.

6615256752 is a `hidden beast` number, since 6 + 61 + 525 + 67 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6615256698 and 6615256707.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2168124 + ... + 2171172.

Almost surely, 2^6615256752 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 6615256752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10669022000).

6615256752 is an abundant number, since it is smaller than the sum of its proper divisors (14722787248).

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

6615256752 is a wasteful number, since it uses less digits than its factorization.

6615256752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156 (or 3147 counting only the distinct ones).

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

The square root of 6615256752 is about 81334.2286617387. The cubic root of 6615256752 is about 1877.2217103220.

The spelling of 6615256752 in words is "six billion, six hundred fifteen million, two hundred fifty-six thousand, seven hundred fifty-two".