113541660209 has 2 divisors, whose sum is σ = 113541660210. Its totient is φ = 113541660208.

The previous prime is 113541660173. The next prime is 113541660217. The reversal of 113541660209 is 902066145311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93220302400 + 20321357809 = 305320^2 + 142553^2 .

It is a cyclic number.

It is not a de Polignac number, because 113541660209 - 2²⁰ = 113540611633 is a prime.

It is not a weakly prime, because it can be changed into another prime (113541660409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56770830104 + 56770830105.

It is an arithmetic number, because the mean of its divisors is an integer number (56770830105).

Almost surely, 2^113541660209 is an apocalyptic number.

It is an amenable number.

113541660209 is a deficient number, since it is larger than the sum of its proper divisors (1).

113541660209 is an equidigital number, since it uses as much as digits as its factorization.

113541660209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 113541660209 in words is "one hundred thirteen billion, five hundred forty-one million, six hundred sixty thousand, two hundred nine".