11661565110616 has 16 divisors (see below), whose sum is σ = 22090851435240. Its totient is φ = 5770671394560.

The previous prime is 11661565110583. The next prime is 11661565110661. The reversal of 11661565110616 is 61601156516611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7513894270 + ... + 7513895821.

Almost surely, 2^{11661565110616} is an apocalyptic number.

It is an amenable number.

11661565110616 is a deficient number, since it is larger than the sum of its proper divisors (10429286324624).

11661565110616 is a wasteful number, since it uses less digits than its factorization.

11661565110616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15027790194 (or 15027790190 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 11661565110616 in words is "eleven trillion, six hundred sixty-one billion, five hundred sixty-five million, one hundred ten thousand, six hundred sixteen".