6550661065004 has 24 divisors (see below), whose sum is σ = 13104318332448. Its totient is φ = 2806784127360.

The previous prime is 6550661064989. The next prime is 6550661065033. The reversal of 6550661065004 is 4005601660556.

It is a happy number.

It is a super-2 number, since 2×6550661065004² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26627177 + ... + 26872064.

It is an arithmetic number, because the mean of its divisors is an integer number (546013263852).

Almost surely, 2^{6550661065004} is an apocalyptic number.

It is an amenable number.

6550661065004 is an abundant number, since it is smaller than the sum of its proper divisors (6553657267444).

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

6550661065004 is a wasteful number, since it uses less digits than its factorization.

6550661065004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53503625 (or 53503623 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 6550661065004 in words is "six trillion, five hundred fifty billion, six hundred sixty-one million, sixty-five thousand, four".