16556734765660 has 12 divisors (see below), whose sum is σ = 34769143007928. Its totient is φ = 6622693906256.

The previous prime is 16556734765607. The next prime is 16556734765699. The reversal of 16556734765660 is 6656743765561.

It is a happy number.

It is a super-2 number, since 2×16556734765660² (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 3 ways as a sum of consecutive naturals, for example, 413918369122 + ... + 413918369161.

It is an arithmetic number, because the mean of its divisors is an integer number (2897428583994).

Almost surely, 2^{16556734765660} is an apocalyptic number.

16556734765660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16556734765660 is an abundant number, since it is smaller than the sum of its proper divisors (18212408242268).

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

16556734765660 is a wasteful number, since it uses less digits than its factorization.

16556734765660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827836738292 (or 827836738290 counting only the distinct ones).

The product of its (nonzero) digits is 571536000, while the sum is 67.

The spelling of 16556734765660 in words is "sixteen trillion, five hundred fifty-six billion, seven hundred thirty-four million, seven hundred sixty-five thousand, six hundred sixty".