200680136561 has 16 divisors (see below), whose sum is σ = 208466818560. Its totient is φ = 192952441920.

The previous prime is 200680136543. The next prime is 200680136581. The reversal of 200680136561 is 165631086002.

It is a de Polignac number, because none of the positive numbers 2^k-200680136561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200680136581) 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, 9937871 + ... + 9958043.

It is an arithmetic number, because the mean of its divisors is an integer number (13029176160).

Almost surely, 2^200680136561 is an apocalyptic number.

It is an amenable number.

200680136561 is a deficient number, since it is larger than the sum of its proper divisors (7786681999).

200680136561 is a wasteful number, since it uses less digits than its factorization.

200680136561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21616.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 200680136561 in words is "two hundred billion, six hundred eighty million, one hundred thirty-six thousand, five hundred sixty-one".