16601321242 has 12 divisors (see below), whose sum is σ = 27371600298. Its totient is φ = 7546055000.

The previous prime is 16601321213. The next prime is 16601321251. The reversal of 16601321242 is 24212310661.

16601321242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15943860361 + 657460881 = 126269^2 + 25641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16601321242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34300009 + ... + 34300492.

Almost surely, 2^16601321242 is an apocalyptic number.

16601321242 is a deficient number, since it is larger than the sum of its proper divisors (10770279056).

16601321242 is a wasteful number, since it uses less digits than its factorization.

16601321242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68600525 (or 68600514 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 16601321242 in words is "sixteen billion, six hundred one million, three hundred twenty-one thousand, two hundred forty-two".