16606551655602 has 20 divisors (see below), whose sum is σ = 37210976858286. Its totient is φ = 5535517218480.

The previous prime is 16606551655549. The next prime is 16606551655609. The reversal of 16606551655602 is 20655615560661.

16606551655602 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 65 + 5 + 16 + 5 + 560 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16284541938921 + 322009716681 = 4035411^2 + 567459^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16606551655609) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51254788899 + ... + 51254789222.

Almost surely, 2^{16606551655602} is an apocalyptic number.

16606551655602 is an abundant number, since it is smaller than the sum of its proper divisors (20604425202684).

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

16606551655602 is a wasteful number, since it uses less digits than its factorization.

16606551655602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102509578135 (or 102509578126 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 54.

The spelling of 16606551655602 in words is "sixteen trillion, six hundred six billion, five hundred fifty-one million, six hundred fifty-five thousand, six hundred two".