16208854709 has 4 divisors (see below), whose sum is σ = 16483581120. Its totient is φ = 15934128300.

The previous prime is 16208854657. The next prime is 16208854721. The reversal of 16208854709 is 90745880261.

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 16208854709 - 2³² = 11913887413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16208854729) 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, 137363117 + ... + 137363234.

It is an arithmetic number, because the mean of its divisors is an integer number (4120895280).

Almost surely, 2^16208854709 is an apocalyptic number.

It is an amenable number.

16208854709 is a deficient number, since it is larger than the sum of its proper divisors (274726411).

16208854709 is an equidigital number, since it uses as much as digits as its factorization.

16208854709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274726410.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 16208854709 in words is "sixteen billion, two hundred eight million, eight hundred fifty-four thousand, seven hundred nine".