16509852619 has 4 divisors (see below), whose sum is σ = 17779841296. Its totient is φ = 15239863944.

The previous prime is 16509852613. The next prime is 16509852643. The reversal of 16509852619 is 91625890561.

16509852619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16509852619 - 2¹³ = 16509844427 is a prime.

It is a super-2 number, since 2×16509852619² (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 (16509852613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634994319 + ... + 634994344.

It is an arithmetic number, because the mean of its divisors is an integer number (4444960324).

Almost surely, 2^16509852619 is an apocalyptic number.

16509852619 is a deficient number, since it is larger than the sum of its proper divisors (1269988677).

16509852619 is a wasteful number, since it uses less digits than its factorization.

16509852619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269988676.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 16509852619 in words is "sixteen billion, five hundred nine million, eight hundred fifty-two thousand, six hundred nineteen".