200961758661 has 4 divisors (see below), whose sum is σ = 267949011552. Its totient is φ = 133974505772.

The previous prime is 200961758651. The next prime is 200961758719. The reversal of 200961758661 is 166857169002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200961758661 - 2⁵ = 200961758629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200961758651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33493626441 + ... + 33493626446.

It is an arithmetic number, because the mean of its divisors is an integer number (66987252888).

Almost surely, 2^200961758661 is an apocalyptic number.

It is an amenable number.

200961758661 is a deficient number, since it is larger than the sum of its proper divisors (66987252891).

200961758661 is an equidigital number, since it uses as much as digits as its factorization.

200961758661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66987252890.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 200961758661 in words is "two hundred billion, nine hundred sixty-one million, seven hundred fifty-eight thousand, six hundred sixty-one".