16942749709 has 2 divisors, whose sum is σ = 16942749710. Its totient is φ = 16942749708.

The previous prime is 16942749689. The next prime is 16942749713. The reversal of 16942749709 is 90794724961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14525552484 + 2417197225 = 120522^2 + 49165^2 .

It is a cyclic number.

It is not a de Polignac number, because 16942749709 - 2³¹ = 14795266061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16942719709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471374854 + 8471374855.

It is an arithmetic number, because the mean of its divisors is an integer number (8471374855).

Almost surely, 2^16942749709 is an apocalyptic number.

It is an amenable number.

16942749709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942749709 is an equidigital number, since it uses as much as digits as its factorization.

16942749709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 16942749709 in words is "sixteen billion, nine hundred forty-two million, seven hundred forty-nine thousand, seven hundred nine".