16505289347 has 2 divisors, whose sum is σ = 16505289348. Its totient is φ = 16505289346.

The previous prime is 16505289329. The next prime is 16505289373. The reversal of 16505289347 is 74398250561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16505289347 - 2²⁸ = 16236853891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16505289295 and 16505289304.

It is not a weakly prime, because it can be changed into another prime (16505289397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252644673 + 8252644674.

It is an arithmetic number, because the mean of its divisors is an integer number (8252644674).

It is a 1-persistent number, because it is pandigital, but 2⋅16505289347 = 33010578694 is not.

Almost surely, 2^16505289347 is an apocalyptic number.

16505289347 is a deficient number, since it is larger than the sum of its proper divisors (1).

16505289347 is an equidigital number, since it uses as much as digits as its factorization.

16505289347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 16505289347 in words is "sixteen billion, five hundred five million, two hundred eighty-nine thousand, three hundred forty-seven".