16519108139929 has 4 divisors (see below), whose sum is σ = 16519121069620. Its totient is φ = 16519095210240.

The previous prime is 16519108139923. The next prime is 16519108139977. The reversal of 16519108139929 is 92993180191561.

16519108139929 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 can be written as a sum of positive squares in 2 ways, for example, as 9656699195529 + 6862408944400 = 3107523^2 + 2619620^2 .

It is a cyclic number.

It is not a de Polignac number, because 16519108139929 - 2¹³ = 16519108131737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16519108139923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308732 + ... + 7183549.

It is an arithmetic number, because the mean of its divisors is an integer number (4129780267405).

Almost surely, 2^{16519108139929} is an apocalyptic number.

It is an amenable number.

16519108139929 is a deficient number, since it is larger than the sum of its proper divisors (12929691).

16519108139929 is a wasteful number, since it uses less digits than its factorization.

16519108139929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929690.

The product of its (nonzero) digits is 9447840, while the sum is 64.

The spelling of 16519108139929 in words is "sixteen trillion, five hundred nineteen billion, one hundred eight million, one hundred thirty-nine thousand, nine hundred twenty-nine".