11605514120909 has 2 divisors, whose sum is σ = 11605514120910. Its totient is φ = 11605514120908.

The previous prime is 11605514120867. The next prime is 11605514120947. The reversal of 11605514120909 is 90902141550611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11322027091684 + 283487029225 = 3364822^2 + 532435^2 .

It is a cyclic number.

It is not a de Polignac number, because 11605514120909 - 2⁸ = 11605514120653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11605514120909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11605514120509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802757060454 + 5802757060455.

It is an arithmetic number, because the mean of its divisors is an integer number (5802757060455).

Almost surely, 2^{11605514120909} is an apocalyptic number.

It is an amenable number.

11605514120909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11605514120909 is an equidigital number, since it uses as much as digits as its factorization.

11605514120909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 11605514120909 in words is "eleven trillion, six hundred five billion, five hundred fourteen million, one hundred twenty thousand, nine hundred nine".