16128268767241 has 4 divisors (see below), whose sum is σ = 16172215004032. Its totient is φ = 16084322530452.

The previous prime is 16128268767239. The next prime is 16128268767307. The reversal of 16128268767241 is 14276786282161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16128268767241 - 2¹ = 16128268767239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16128268767241.

It is not an unprimeable number, because it can be changed into a prime (16128268167241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21973117845 + ... + 21973118578.

It is an arithmetic number, because the mean of its divisors is an integer number (4043053751008).

Almost surely, 2^{16128268767241} is an apocalyptic number.

It is an amenable number.

16128268767241 is a deficient number, since it is larger than the sum of its proper divisors (43946236791).

16128268767241 is an equidigital number, since it uses as much as digits as its factorization.

16128268767241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43946236790.

The product of its digits is 21676032, while the sum is 61.

The spelling of 16128268767241 in words is "sixteen trillion, one hundred twenty-eight billion, two hundred sixty-eight million, seven hundred sixty-seven thousand, two hundred forty-one".