16503216530 has 8 divisors (see below), whose sum is σ = 29705789772. Its totient is φ = 6601286608.

The previous prime is 16503216529. The next prime is 16503216547. The reversal of 16503216530 is 3561230561.

It can be written as a sum of positive squares in 2 ways, for example, as 15099740161 + 1403476369 = 122881^2 + 37463^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 825160817 + ... + 825160836.

Almost surely, 2^16503216530 is an apocalyptic number.

16503216530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16503216530 is a deficient number, since it is larger than the sum of its proper divisors (13202573242).

16503216530 is a wasteful number, since it uses less digits than its factorization.

16503216530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650321660.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 16503216530 in words is "sixteen billion, five hundred three million, two hundred sixteen thousand, five hundred thirty".