16111610661660 has 96 divisors (see below), whose sum is σ = 45197436049920. Its totient is φ = 4288348086528.

The previous prime is 16111610661649. The next prime is 16111610661701. The reversal of 16111610661660 is 6616601611161.

16111610661660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16111610661660² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76741911 + ... + 76951569.

It is an arithmetic number, because the mean of its divisors is an integer number (470806625520).

Almost surely, 2^{16111610661660} is an apocalyptic number.

16111610661660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16111610661660 is an abundant number, since it is smaller than the sum of its proper divisors (29085825388260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16111610661660 is a wasteful number, since it uses less digits than its factorization.

16111610661660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212075 (or 212073 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 16111610661660 in words is "sixteen trillion, one hundred eleven billion, six hundred ten million, six hundred sixty-one thousand, six hundred sixty".