16342342109 has 2 divisors, whose sum is σ = 16342342110. Its totient is φ = 16342342108.

The previous prime is 16342342103. The next prime is 16342342127. The reversal of 16342342109 is 90124324361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14561248900 + 1781093209 = 120670^2 + 42203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16342342109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16342342103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8171171054 + 8171171055.

It is an arithmetic number, because the mean of its divisors is an integer number (8171171055).

Almost surely, 2^16342342109 is an apocalyptic number.

It is an amenable number.

16342342109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16342342109 is an equidigital number, since it uses as much as digits as its factorization.

16342342109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 16342342109 in words is "sixteen billion, three hundred forty-two million, three hundred forty-two thousand, one hundred nine".