3665402363449 has 4 divisors (see below), whose sum is σ = 3692157125364. Its totient is φ = 3638647601536.

The previous prime is 3665402363443. The next prime is 3665402363453. The reversal of 3665402363449 is 9443632045663.

It is a happy number.

3665402363449 is digitally balanced in base 3, 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 1732487737600 + 1932914625849 = 1316240^2 + 1390293^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665402363449 - 2¹³ = 3665402355257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3665402363449.

It is not an unprimeable number, because it can be changed into a prime (3665402363443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13377380752 + ... + 13377381025.

It is an arithmetic number, because the mean of its divisors is an integer number (923039281341).

Almost surely, 2^{3665402363449} is an apocalyptic number.

It is an amenable number.

3665402363449 is a deficient number, since it is larger than the sum of its proper divisors (26754761915).

3665402363449 is a wasteful number, since it uses less digits than its factorization.

3665402363449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754761914.

The product of its (nonzero) digits is 33592320, while the sum is 55.

The spelling of 3665402363449 in words is "three trillion, six hundred sixty-five billion, four hundred two million, three hundred sixty-three thousand, four hundred forty-nine".