16447654441 has 4 divisors (see below), whose sum is σ = 16459133652. Its totient is φ = 16436175232.

The previous prime is 16447654409. The next prime is 16447654501. The reversal of 16447654441 is 14445674461.

16447654441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9673706025 + 6773948416 = 98355^2 + 82304^2 .

It is a cyclic number.

It is not a de Polignac number, because 16447654441 - 2⁵ = 16447654409 is a prime.

It is a super-2 number, since 2×16447654441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16447654391 and 16447654400.

It is not an unprimeable number, because it can be changed into a prime (16447684441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5737456 + ... + 5740321.

It is an arithmetic number, because the mean of its divisors is an integer number (4114783413).

Almost surely, 2^16447654441 is an apocalyptic number.

It is an amenable number.

16447654441 is a deficient number, since it is larger than the sum of its proper divisors (11479211).

16447654441 is a wasteful number, since it uses less digits than its factorization.

16447654441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11479210.

The product of its digits is 1290240, while the sum is 46.

The spelling of 16447654441 in words is "sixteen billion, four hundred forty-seven million, six hundred fifty-four thousand, four hundred forty-one".