6615565012 has 24 divisors (see below), whose sum is σ = 13417488000. Its totient is φ = 2795308320.

The previous prime is 6615564983. The next prime is 6615565037. The reversal of 6615565012 is 2105655166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661887 + ... + 1665862.

It is an arithmetic number, because the mean of its divisors is an integer number (559062000).

Almost surely, 2^6615565012 is an apocalyptic number.

It is an amenable number.

6615565012 is an abundant number, since it is smaller than the sum of its proper divisors (6801922988).

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

6615565012 is a wasteful number, since it uses less digits than its factorization.

6615565012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327831 (or 3327829 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 6615565012 is about 81336.1236597860. The cubic root of 6615565012 is about 1877.2508683425.

The spelling of 6615565012 in words is "six billion, six hundred fifteen million, five hundred sixty-five thousand, twelve".