16523442129 has 32 divisors (see below), whose sum is σ = 22765227264. Its totient is φ = 10652532480.

The previous prime is 16523442097. The next prime is 16523442139. The reversal of 16523442129 is 92124432561.

It is not a de Polignac number, because 16523442129 - 2⁵ = 16523442097 is a prime.

It is not an unprimeable number, because it can be changed into a 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 in 31 ways as a sum of consecutive naturals, for example, 22541847 + ... + 22542579.

It is an arithmetic number, because the mean of its divisors is an integer number (711413352).

Almost surely, 2^16523442129 is an apocalyptic number.

It is an amenable number.

16523442129 is a deficient number, since it is larger than the sum of its proper divisors (6241785135).

16523442129 is a wasteful number, since it uses less digits than its factorization.

16523442129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737.

The product of its digits is 103680, while the sum is 39.

The spelling of 16523442129 in words is "sixteen billion, five hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-nine".