16308708709 has 2 divisors, whose sum is σ = 16308708710. Its totient is φ = 16308708708.

The previous prime is 16308708697. The next prime is 16308708809. The reversal of 16308708709 is 90780780361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15109818084 + 1198890625 = 122922^2 + 34625^2 .

It is a cyclic number.

It is not a de Polignac number, because 16308708709 - 2⁵ = 16308708677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16308708809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8154354354 + 8154354355.

It is an arithmetic number, because the mean of its divisors is an integer number (8154354355).

Almost surely, 2^16308708709 is an apocalyptic number.

It is an amenable number.

16308708709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16308708709 is an equidigital number, since it uses as much as digits as its factorization.

16308708709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 16308708709 in words is "sixteen billion, three hundred eight million, seven hundred eight thousand, seven hundred nine".