16523442097 has 2 divisors, whose sum is σ = 16523442098. Its totient is φ = 16523442096.

The previous prime is 16523442083. The next prime is 16523442139. The reversal of 16523442097 is 79024432561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15064125696 + 1459316401 = 122736^2 + 38201^2 .

It is a cyclic number.

It is not a de Polignac number, because 16523442097 - 2¹¹ = 16523440049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16523442997) 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, 8261721048 + 8261721049.

It is an arithmetic number, because the mean of its divisors is an integer number (8261721049).

Almost surely, 2^16523442097 is an apocalyptic number.

It is an amenable number.

16523442097 is a deficient number, since it is larger than the sum of its proper divisors (1).

16523442097 is an equidigital number, since it uses as much as digits as its factorization.

16523442097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 16523442097 in words is "sixteen billion, five hundred twenty-three million, four hundred forty-two thousand, ninety-seven".