16500650545 has 8 divisors (see below), whose sum is σ = 19926901224. Its totient is φ = 13116440064.

The previous prime is 16500650533. The next prime is 16500650561. The reversal of 16500650545 is 54505600561.

It can be written as a sum of positive squares in 4 ways, for example, as 2922807969 + 13577842576 = 54063^2 + 116524^2 .

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 16500650545 - 2¹¹ = 16500648497 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 10509184 + ... + 10510753.

It is an arithmetic number, because the mean of its divisors is an integer number (2490862653).

Almost surely, 2^16500650545 is an apocalyptic number.

It is an amenable number.

16500650545 is a deficient number, since it is larger than the sum of its proper divisors (3426250679).

16500650545 is a wasteful number, since it uses less digits than its factorization.

16500650545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020099.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 16500650545 in words is "sixteen billion, five hundred million, six hundred fifty thousand, five hundred forty-five".