16331280242 has 4 divisors (see below), whose sum is σ = 24496920366. Its totient is φ = 8165640120.

The previous prime is 16331280241. The next prime is 16331280253. The reversal of 16331280242 is 24208213361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9179364481 + 7151915761 = 95809^2 + 84569^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16331280199 and 16331280208.

It is not an unprimeable number, because it can be changed into a prime (16331280241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082820059 + ... + 4082820062.

Almost surely, 2^16331280242 is an apocalyptic number.

16331280242 is a deficient number, since it is larger than the sum of its proper divisors (8165640124).

16331280242 is an equidigital number, since it uses as much as digits as its factorization.

16331280242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8165640123.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 16331280242 in words is "sixteen billion, three hundred thirty-one million, two hundred eighty thousand, two hundred forty-two".