200661604505 has 8 divisors (see below), whose sum is σ = 240845725824. Its totient is φ = 160494750000.

The previous prime is 200661604487. The next prime is 200661604511. The reversal of 200661604505 is 505406166002.

200661604505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200661604505 - 2⁸ = 200661604249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4291121 + ... + 4337630.

It is an arithmetic number, because the mean of its divisors is an integer number (30105715728).

Almost surely, 2^200661604505 is an apocalyptic number.

It is an amenable number.

200661604505 is a deficient number, since it is larger than the sum of its proper divisors (40184121319).

200661604505 is an equidigital number, since it uses as much as digits as its factorization.

200661604505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8633407.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 200661604505 in words is "two hundred billion, six hundred sixty-one million, six hundred four thousand, five hundred five".