16500532609 has 8 divisors (see below), whose sum is σ = 18005999328. Its totient is φ = 14995968960.

The previous prime is 16500532591. The next prime is 16500532613. The reversal of 16500532609 is 90623500561.

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 16500532609 - 2¹⁷ = 16500401537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16500532109) 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, 187272 + ... + 260905.

It is an arithmetic number, because the mean of its divisors is an integer number (2250749916).

Almost surely, 2^16500532609 is an apocalyptic number.

It is an amenable number.

16500532609 is a deficient number, since it is larger than the sum of its proper divisors (1505466719).

16500532609 is a wasteful number, since it uses less digits than its factorization.

16500532609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451535.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 16500532609 in words is "sixteen billion, five hundred million, five hundred thirty-two thousand, six hundred nine".