16606561646560 has 24 divisors (see below), whose sum is σ = 39233001890376. Its totient is φ = 6642624658560.

The previous prime is 16606561646527. The next prime is 16606561646617. The reversal of 16606561646560 is 6564616560661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16606561646495 and 16606561646504.

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, 51895504986 + ... + 51895505305.

It is an arithmetic number, because the mean of its divisors is an integer number (1634708412099).

Almost surely, 2^{16606561646560} is an apocalyptic number.

16606561646560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16606561646560 is an abundant number, since it is smaller than the sum of its proper divisors (22626440243816).

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

16606561646560 is a wasteful number, since it uses less digits than its factorization.

16606561646560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103791010306 (or 103791010298 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 16606561646560 in words is "sixteen trillion, six hundred six billion, five hundred sixty-one million, six hundred forty-six thousand, five hundred sixty".