16502545603 has 4 divisors (see below), whose sum is σ = 16503989760. Its totient is φ = 16501101448.

The previous prime is 16502545597. The next prime is 16502545621. The reversal of 16502545603 is 30654520561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16502545603 - 2²¹ = 16500448451 is a prime.

It is a super-2 number, since 2×16502545603² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16502555603) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 704800 + ... + 727837.

It is an arithmetic number, because the mean of its divisors is an integer number (4125997440).

Almost surely, 2^16502545603 is an apocalyptic number.

16502545603 is a deficient number, since it is larger than the sum of its proper divisors (1444157).

16502545603 is a wasteful number, since it uses less digits than its factorization.

16502545603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444156.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 16502545603 in words is "sixteen billion, five hundred two million, five hundred forty-five thousand, six hundred three".