16513278621841 has 8 divisors (see below), whose sum is σ = 16541146160000. Its totient is φ = 16485414924240.

The previous prime is 16513278621839. The next prime is 16513278621893. The reversal of 16513278621841 is 14812687231561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16513278621841 - 2¹ = 16513278621839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16513278021841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7712551 + ... + 9618211.

It is an arithmetic number, because the mean of its divisors is an integer number (2067643270000).

Almost surely, 2^{16513278621841} is an apocalyptic number.

It is an amenable number.

16513278621841 is a deficient number, since it is larger than the sum of its proper divisors (27867538159).

16513278621841 is a wasteful number, since it uses less digits than its factorization.

16513278621841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920279.

The product of its digits is 3870720, while the sum is 55.

The spelling of 16513278621841 in words is "sixteen trillion, five hundred thirteen billion, two hundred seventy-eight million, six hundred twenty-one thousand, eight hundred forty-one".