11661560661116 has 12 divisors (see below), whose sum is σ = 20411864821488. Its totient is φ = 5829599283552.

The previous prime is 11661560661109. The next prime is 11661560661119. The reversal of 11661560661116 is 61116606516611.

11661560661116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661560661119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295239536 + ... + 295279031.

It is an arithmetic number, because the mean of its divisors is an integer number (1700988735124).

Almost surely, 2^{11661560661116} is an apocalyptic number.

It is an amenable number.

11661560661116 is a deficient number, since it is larger than the sum of its proper divisors (8750304160372).

11661560661116 is a wasteful number, since it uses less digits than its factorization.

11661560661116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590523508 (or 590523506 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 11661560661116 in words is "eleven trillion, six hundred sixty-one billion, five hundred sixty million, six hundred sixty-one thousand, one hundred sixteen".