16939209713 has 2 divisors, whose sum is σ = 16939209714. Its totient is φ = 16939209712.

The previous prime is 16939209673. The next prime is 16939209733. The reversal of 16939209713 is 31790293961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14745973489 + 2193236224 = 121433^2 + 46832^2 .

It is a cyclic number.

It is not a de Polignac number, because 16939209713 - 2²⁴ = 16922432497 is a prime.

It is not a weakly prime, because it can be changed into another prime (16939209733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8469604856 + 8469604857.

It is an arithmetic number, because the mean of its divisors is an integer number (8469604857).

Almost surely, 2^16939209713 is an apocalyptic number.

It is an amenable number.

16939209713 is a deficient number, since it is larger than the sum of its proper divisors (1).

16939209713 is an equidigital number, since it uses as much as digits as its factorization.

16939209713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 551124, while the sum is 50.

The spelling of 16939209713 in words is "sixteen billion, nine hundred thirty-nine million, two hundred nine thousand, seven hundred thirteen".