16523620012 has 12 divisors (see below), whose sum is σ = 28934407656. Its totient is φ = 8256646400.

The previous prime is 16523619991. The next prime is 16523620079. The reversal of 16523620012 is 21002632561.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1283698 + ... + 1296505.

It is an arithmetic number, because the mean of its divisors is an integer number (2411200638).

Almost surely, 2^16523620012 is an apocalyptic number.

It is an amenable number.

16523620012 is a deficient number, since it is larger than the sum of its proper divisors (12410787644).

16523620012 is a wasteful number, since it uses less digits than its factorization.

16523620012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581808 (or 2581806 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 16523620012 in words is "sixteen billion, five hundred twenty-three million, six hundred twenty thousand, twelve".