6555221305434 has 24 divisors (see below), whose sum is σ = 14549393630772. Its totient is φ = 2131779286080.

The previous prime is 6555221305433. The next prime is 6555221305453. The reversal of 6555221305434 is 4345031225556.

6555221305434 is a `hidden beast` number, since 6 + 5 + 5 + 52 + 21 + 30 + 543 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6351896968209 + 203324337225 = 2520297^2 + 450915^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6555221305434.

It is not an unprimeable number, because it can be changed into a prime (6555221305433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4441206109 + ... + 4441207584.

Almost surely, 2^{6555221305434} is an apocalyptic number.

6555221305434 is an abundant number, since it is smaller than the sum of its proper divisors (7994172325338).

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

6555221305434 is a wasteful number, since it uses less digits than its factorization.

6555221305434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8882413742 (or 8882413739 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 6555221305434 in words is "six trillion, five hundred fifty-five billion, two hundred twenty-one million, three hundred five thousand, four hundred thirty-four".