8204409263556 has 81 divisors (see below), whose sum is σ = 22796201421903. Its totient is φ = 2486127338640.

The previous prime is 8204409263551. The next prime is 8204409263573. The reversal of 8204409263556 is 6553629044028.

The square root of 8204409263556 is 2864334.

It is a perfect power (a square), and thus also a powerful number.

8204409263556 is a `hidden beast` number, since 8 + 2 + 0 + 440 + 92 + 63 + 5 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (8204409263551) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 189024345 + ... + 189067743.

Almost surely, 2^{8204409263556} is an apocalyptic number.

8204409263556 is the 2864334-th square number.

It is an amenable number.

8204409263556 is an abundant number, since it is smaller than the sum of its proper divisors (14591792158347).

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

8204409263556 is an equidigital number, since it uses as much as digits as its factorization.

8204409263556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86830 (or 43415 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 54.

The spelling of 8204409263556 in words is "eight trillion, two hundred four billion, four hundred nine million, two hundred sixty-three thousand, five hundred fifty-six".