16650572605 has 16 divisors (see below), whose sum is σ = 20406634560. Its totient is φ = 13038433408.

The previous prime is 16650572563. The next prime is 16650572611. The reversal of 16650572605 is 50627505661.

It is a cyclic number.

It is not a de Polignac number, because 16650572605 - 2⁹ = 16650572093 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 52387 + ... + 189856.

It is an arithmetic number, because the mean of its divisors is an integer number (1275414660).

Almost surely, 2^16650572605 is an apocalyptic number.

It is an amenable number.

16650572605 is a deficient number, since it is larger than the sum of its proper divisors (3756061955).

16650572605 is a wasteful number, since it uses less digits than its factorization.

16650572605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242540.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 16650572605 in words is "sixteen billion, six hundred fifty million, five hundred seventy-two thousand, six hundred five".