6655205215650 has 24 divisors (see below), whose sum is σ = 16504908935184. Its totient is φ = 1774721390800.

The previous prime is 6655205215649. The next prime is 6655205215651. The reversal of 6655205215650 is 565125025566.

It is an interprime number because it is at equal distance from previous prime (6655205215649) and next prime (6655205215651).

It is a self number, because there is not a number n which added to its sum of digits gives 6655205215650.

It is not an unprimeable number, because it can be changed into a prime (6655205215651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22184017236 + ... + 22184017535.

It is an arithmetic number, because the mean of its divisors is an integer number (687704538966).

Almost surely, 2^{6655205215650} is an apocalyptic number.

6655205215650 is an abundant number, since it is smaller than the sum of its proper divisors (9849703719534).

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

6655205215650 is a wasteful number, since it uses less digits than its factorization.

6655205215650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44368034786 (or 44368034781 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 6655205215650 in words is "six trillion, six hundred fifty-five billion, two hundred five million, two hundred fifteen thousand, six hundred fifty".