16259109409 has 4 divisors (see below), whose sum is σ = 16383224880. Its totient is φ = 16134993940.

The previous prime is 16259109407. The next prime is 16259109439. The reversal of 16259109409 is 90490195261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16259109409 - 2¹ = 16259109407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16259109407) 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, 62057539 + ... + 62057800.

It is an arithmetic number, because the mean of its divisors is an integer number (4095806220).

Almost surely, 2^16259109409 is an apocalyptic number.

It is an amenable number.

16259109409 is a deficient number, since it is larger than the sum of its proper divisors (124115471).

16259109409 is a wasteful number, since it uses less digits than its factorization.

16259109409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124115470.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 16259109409 in words is "sixteen billion, two hundred fifty-nine million, one hundred nine thousand, four hundred nine".