14005065649 has 3 divisors (see below), whose sum is σ = 14005183993. Its totient is φ = 14004947306.

The previous prime is 14005065617. The next prime is 14005065691. The reversal of 14005065649 is 94656050041.

It is a happy number.

The square root of 14005065649 is 118343.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94656050041 = 7 ⋅13522292863.

It is not a de Polignac number, because 14005065649 - 2⁵ = 14005065617 is a prime.

It is a super-2 number, since 2×14005065649² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14005062649) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 59172 + ... + 177514.

Almost surely, 2^14005065649 is an apocalyptic number.

14005065649 is the 118343-rd square number.

14005065649 is the 59172-nd centered octagonal number.

It is an amenable number.

14005065649 is a deficient number, since it is larger than the sum of its proper divisors (118344).

14005065649 is an frugal number, since it uses more digits than its factorization.

14005065649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236686 (or 118343 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 14005065649 in words is "fourteen billion, five million, sixty-five thousand, six hundred forty-nine".