11506660615606 has 32 divisors (see below), whose sum is σ = 19041420384000. Its totient is φ = 5182608648096.

The previous prime is 11506660615603. The next prime is 11506660615627. The reversal of 11506660615606 is 60651606660511.

It is a self number, because there is not a number n which added to its sum of digits gives 11506660615606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506660615603) 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, 30680106 + ... + 31052893.

It is an arithmetic number, because the mean of its divisors is an integer number (595044387000).

Almost surely, 2^{11506660615606} is an apocalyptic number.

11506660615606 is a deficient number, since it is larger than the sum of its proper divisors (7534759768394).

11506660615606 is a wasteful number, since it uses less digits than its factorization.

11506660615606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61733188.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 11506660615606 in words is "eleven trillion, five hundred six billion, six hundred sixty million, six hundred fifteen thousand, six hundred six".