6556005650563 has 16 divisors (see below), whose sum is σ = 7077383913600. Its totient is φ = 6052603072320.

The previous prime is 6556005650561. The next prime is 6556005650567. The reversal of 6556005650563 is 3650565006556.

It is a cyclic number.

It is not a de Polignac number, because 6556005650563 - 2¹ = 6556005650561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6556005650563.

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, 4077673 + ... + 5453386.

It is an arithmetic number, because the mean of its divisors is an integer number (442336494600).

Almost surely, 2^{6556005650563} is an apocalyptic number.

6556005650563 is a deficient number, since it is larger than the sum of its proper divisors (521378263037).

6556005650563 is a wasteful number, since it uses less digits than its factorization.

6556005650563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532002.

The product of its (nonzero) digits is 12150000, while the sum is 52.

The spelling of 6556005650563 in words is "six trillion, five hundred fifty-six billion, five million, six hundred fifty thousand, five hundred sixty-three".