11605603605 has 16 divisors (see below), whose sum is σ = 19661258304. Its totient is φ = 5825557760.

The previous prime is 11605603601. The next prime is 11605603619. The reversal of 11605603605 is 50630650611.

It is not a de Polignac number, because 11605603605 - 2² = 11605603601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11605603601) 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, 22755831 + ... + 22756340.

It is an arithmetic number, because the mean of its divisors is an integer number (1228828644).

Almost surely, 2^11605603605 is an apocalyptic number.

11605603605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11605603605 is a deficient number, since it is larger than the sum of its proper divisors (8055654699).

11605603605 is a wasteful number, since it uses less digits than its factorization.

11605603605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45512196.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 11605603605 in words is "eleven billion, six hundred five million, six hundred three thousand, six hundred five".