16449862569121 has 8 divisors (see below), whose sum is σ = 16520685951744. Its totient is φ = 16379041093920.

The previous prime is 16449862569113. The next prime is 16449862569149. The reversal of 16449862569121 is 12196526894461.

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 16449862569121 - 2³ = 16449862569113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16449862569421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18415980 + ... + 19288546.

It is an arithmetic number, because the mean of its divisors is an integer number (2065085743968).

Almost surely, 2^{16449862569121} is an apocalyptic number.

It is an amenable number.

16449862569121 is a deficient number, since it is larger than the sum of its proper divisors (70823382623).

16449862569121 is an equidigital number, since it uses as much as digits as its factorization.

16449862569121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953711.

The product of its digits is 44789760, while the sum is 64.

The spelling of 16449862569121 in words is "sixteen trillion, four hundred forty-nine billion, eight hundred sixty-two million, five hundred sixty-nine thousand, one hundred twenty-one".