16661061712052 has 12 divisors (see below), whose sum is σ = 29156937096000. Its totient is φ = 8330508256056.

The previous prime is 16661061712027. The next prime is 16661061712073. The reversal of 16661061712052 is 25021716016661.

It is a happy number.

16661061712052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16661061711994 and 16661061712012.

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, 3933302 + ... + 6985197.

It is an arithmetic number, because the mean of its divisors is an integer number (2429744758000).

Almost surely, 2^{16661061712052} is an apocalyptic number.

It is an amenable number.

16661061712052 is a deficient number, since it is larger than the sum of its proper divisors (12495875383948).

16661061712052 is a wasteful number, since it uses less digits than its factorization.

16661061712052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299990 (or 11299988 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 16661061712052 in words is "sixteen trillion, six hundred sixty-one billion, sixty-one million, seven hundred twelve thousand, fifty-two".