16608391251 has 32 divisors (see below), whose sum is σ = 22950799872. Its totient is φ = 10676413440.

The previous prime is 16608391229. The next prime is 16608391259. The reversal of 16608391251 is 15219380661.

It is not a de Polignac number, because 16608391251 - 2⁶ = 16608391187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16608391259) 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, 4688541 + ... + 4692081.

It is an arithmetic number, because the mean of its divisors is an integer number (717212496).

Almost surely, 2^16608391251 is an apocalyptic number.

16608391251 is a deficient number, since it is larger than the sum of its proper divisors (6342408621).

16608391251 is a wasteful number, since it uses less digits than its factorization.

16608391251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 16608391251 in words is "sixteen billion, six hundred eight million, three hundred ninety-one thousand, two hundred fifty-one".