16606180520 has 32 divisors (see below), whose sum is σ = 37706704200. Its totient is φ = 6581530368.

The previous prime is 16606180517. The next prime is 16606180537. The reversal of 16606180520 is 2508160661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11075878564 + 5530301956 = 105242^2 + 74366^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1900019 + ... + 1908738.

Almost surely, 2^16606180520 is an apocalyptic number.

16606180520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16606180520 is an abundant number, since it is smaller than the sum of its proper divisors (21100523680).

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

16606180520 is a wasteful number, since it uses less digits than its factorization.

16606180520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808877 (or 3808873 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 16606180520 in words is "sixteen billion, six hundred six million, one hundred eighty thousand, five hundred twenty".