11605272805585 has 8 divisors (see below), whose sum is σ = 13938119352936. Its totient is φ = 9276356920320.

The previous prime is 11605272805531. The next prime is 11605272805597. The reversal of 11605272805585 is 58550827250611.

It can be written as a sum of positive squares in 4 ways, for example, as 2188574060689 + 9416698744896 = 1479383^2 + 3068664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11605272805585 - 2⁷ = 11605272805457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982659024 + ... + 982670833.

It is an arithmetic number, because the mean of its divisors is an integer number (1742264919117).

Almost surely, 2^{11605272805585} is an apocalyptic number.

It is an amenable number.

11605272805585 is a deficient number, since it is larger than the sum of its proper divisors (2332846547351).

11605272805585 is a wasteful number, since it uses less digits than its factorization.

11605272805585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965331043.

The product of its (nonzero) digits is 6720000, while the sum is 55.

The spelling of 11605272805585 in words is "eleven trillion, six hundred five billion, two hundred seventy-two million, eight hundred five thousand, five hundred eighty-five".