16603095609 has 45 divisors (see below), whose sum is σ = 25226768853. Its totient is φ = 10882408968.

The previous prime is 16603095601. The next prime is 16603095643. The reversal of 16603095609 is 90659030661.

The square root of 16603095609 is 128853.

It is a perfect power (a square), and thus also a powerful number.

16603095609 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 30 + 9 + 5 + 609 = 666.

It is not a de Polignac number, because 16603095609 - 2³ = 16603095601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16603095601) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 119446662 + ... + 119446800.

Almost surely, 2^16603095609 is an apocalyptic number.

16603095609 is the 128853-rd square number.

16603095609 is the 64427-th centered octagonal number.

It is an amenable number.

16603095609 is a deficient number, since it is larger than the sum of its proper divisors (8623673244).

16603095609 is an frugal number, since it uses more digits than its factorization.

16603095609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 16603095609 in words is "sixteen billion, six hundred three million, ninety-five thousand, six hundred nine".