16204671509 has 8 divisors (see below), whose sum is σ = 18014126592. Its totient is φ = 14475636720.

The previous prime is 16204671503. The next prime is 16204671521. The reversal of 16204671509 is 90517640261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16204671509 - 2⁸ = 16204671253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16204671503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20104649 + ... + 20105454.

It is an arithmetic number, because the mean of its divisors is an integer number (2251765824).

Almost surely, 2^16204671509 is an apocalyptic number.

It is an amenable number.

16204671509 is a deficient number, since it is larger than the sum of its proper divisors (1809455083).

16204671509 is a wasteful number, since it uses less digits than its factorization.

16204671509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40210147.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 16204671509 in words is "sixteen billion, two hundred four million, six hundred seventy-one thousand, five hundred nine".