14561648641 has 4 divisors (see below), whose sum is σ = 14568542212. Its totient is φ = 14554755072.

The previous prime is 14561648597. The next prime is 14561648681. The reversal of 14561648641 is 14684616541.

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 3712343041 + 10849305600 = 60929^2 + 104160^2 .

It is a cyclic number.

It is not a de Polignac number, because 14561648641 - 2⁷ = 14561648513 is a prime.

It is a super-2 number, since 2×14561648641² (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 = 14561648591 and 14561648600.

It is not an unprimeable number, because it can be changed into a prime (14561648681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443616 + ... + 3447841.

It is an arithmetic number, because the mean of its divisors is an integer number (3642135553).

Almost surely, 2^14561648641 is an apocalyptic number.

It is an amenable number.

14561648641 is a deficient number, since it is larger than the sum of its proper divisors (6893571).

14561648641 is an equidigital number, since it uses as much as digits as its factorization.

14561648641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893570.

The product of its digits is 552960, while the sum is 46.

The spelling of 14561648641 in words is "fourteen billion, five hundred sixty-one million, six hundred forty-eight thousand, six hundred forty-one".