16523442239 has 2 divisors, whose sum is σ = 16523442240. Its totient is φ = 16523442238.

The previous prime is 16523442191. The next prime is 16523442251. The reversal of 16523442239 is 93224432561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16523442239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16523442196 and 16523442205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16523442139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8261721119 + 8261721120.

It is an arithmetic number, because the mean of its divisors is an integer number (8261721120).

Almost surely, 2^16523442239 is an apocalyptic number.

16523442239 is a deficient number, since it is larger than the sum of its proper divisors (1).

16523442239 is an equidigital number, since it uses as much as digits as its factorization.

16523442239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The spelling of 16523442239 in words is "sixteen billion, five hundred twenty-three million, four hundred forty-two thousand, two hundred thirty-nine".