6533200661 has 16 divisors (see below), whose sum is σ = 7249117680. Its totient is φ = 5850324480.

The previous prime is 6533200573. The next prime is 6533200693. The reversal of 6533200661 is 1660023356.

It can be written as a sum of positive squares in 8 ways, for example, as 1687648561 + 4845552100 = 41081^2 + 69610^2 .

It is not a de Polignac number, because 6533200661 - 2¹⁴ = 6533184277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6533200061) 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, 8051 + ... + 114591.

It is an arithmetic number, because the mean of its divisors is an integer number (453069855).

Almost surely, 2^6533200661 is an apocalyptic number.

It is an amenable number.

6533200661 is a deficient number, since it is larger than the sum of its proper divisors (715917019).

6533200661 is a wasteful number, since it uses less digits than its factorization.

6533200661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106696.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 6533200661 is about 80828.2169851593. The cubic root of 6533200661 is about 1869.4276667473.

The spelling of 6533200661 in words is "six billion, five hundred thirty-three million, two hundred thousand, six hundred sixty-one".