16606511203505 has 16 divisors (see below), whose sum is σ = 20367589886784. Its totient is φ = 12995194228800.

The previous prime is 16606511203463. The next prime is 16606511203507. The reversal of 16606511203505 is 50530211560661.

It is a de Polignac number, because none of the positive numbers 2^k-16606511203505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16606511203507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 198055559 + ... + 198139388.

It is an arithmetic number, because the mean of its divisors is an integer number (1272974367924).

Almost surely, 2^{16606511203505} is an apocalyptic number.

It is an amenable number.

16606511203505 is a deficient number, since it is larger than the sum of its proper divisors (3761078683279).

16606511203505 is a wasteful number, since it uses less digits than its factorization.

16606511203505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396195136.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 16606511203505 in words is "sixteen trillion, six hundred six billion, five hundred eleven million, two hundred three thousand, five hundred five".