11660610655605 has 16 divisors (see below), whose sum is σ = 19638923209920. Its totient is φ = 5891676962688.

The previous prime is 11660610655537. The next prime is 11660610655619. The reversal of 11660610655605 is 50655601606611.

It is not a de Polignac number, because 11660610655605 - 2¹⁴ = 11660610639221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20457211392 + ... + 20457211961.

It is an arithmetic number, because the mean of its divisors is an integer number (1227432700620).

Almost surely, 2^{11660610655605} is an apocalyptic number.

11660610655605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11660610655605 is a deficient number, since it is larger than the sum of its proper divisors (7978312554315).

11660610655605 is a wasteful number, since it uses less digits than its factorization.

11660610655605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40914423380.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 11660610655605 in words is "eleven trillion, six hundred sixty billion, six hundred ten million, six hundred fifty-five thousand, six hundred five".