16563129265 has 16 divisors (see below), whose sum is σ = 20749913856. Its totient is φ = 12668286400.

The previous prime is 16563129241. The next prime is 16563129277. The reversal of 16563129265 is 56292136561.

It is not a de Polignac number, because 16563129265 - 2⁹ = 16563128753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212580 + ... + 279850.

It is an arithmetic number, because the mean of its divisors is an integer number (1296869616).

Almost surely, 2^16563129265 is an apocalyptic number.

It is an amenable number.

16563129265 is a deficient number, since it is larger than the sum of its proper divisors (4186784591).

16563129265 is a wasteful number, since it uses less digits than its factorization.

16563129265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69440.

The product of its digits is 583200, while the sum is 46.

The spelling of 16563129265 in words is "sixteen billion, five hundred sixty-three million, one hundred twenty-nine thousand, two hundred sixty-five".