6556005650560 has 128 divisors (see below), whose sum is σ = 16079654217600. Its totient is φ = 2555139342336.

The previous prime is 6556005650479. The next prime is 6556005650561. The reversal of 6556005650560 is 650565006556.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (6556005650561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3498637 + ... + 5035123.

It is an arithmetic number, because the mean of its divisors is an integer number (125622298575).

Almost surely, 2^{6556005650560} 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 6556005650560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8039827108800).

6556005650560 is an abundant number, since it is smaller than the sum of its proper divisors (9523648567040).

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

6556005650560 is a wasteful number, since it uses less digits than its factorization.

6556005650560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536678 (or 1536666 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 6556005650560 in words is "six trillion, five hundred fifty-six billion, five million, six hundred fifty thousand, five hundred sixty".