11561650099 has 2 divisors, whose sum is σ = 11561650100. Its totient is φ = 11561650098.

The previous prime is 11561650091. The next prime is 11561650117. The reversal of 11561650099 is 99005616511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11561650099 - 2³ = 11561650091 is a prime.

It is not a weakly prime, because it can be changed into another prime (11561650091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780825049 + 5780825050.

It is an arithmetic number, because the mean of its divisors is an integer number (5780825050).

Almost surely, 2^11561650099 is an apocalyptic number.

11561650099 is a deficient number, since it is larger than the sum of its proper divisors (1).

11561650099 is an equidigital number, since it uses as much as digits as its factorization.

11561650099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 43.

The spelling of 11561650099 in words is "eleven billion, five hundred sixty-one million, six hundred fifty thousand, ninety-nine".