1344623240665 has 32 divisors (see below), whose sum is σ = 1710980153856. Its totient is φ = 1010931425280.

The previous prime is 1344623240663. The next prime is 1344623240669. The reversal of 1344623240665 is 5660423264431.

It is a happy number.

It is not a de Polignac number, because 1344623240665 - 2¹ = 1344623240663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344623240663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243103950 + ... + 243109480.

It is an arithmetic number, because the mean of its divisors is an integer number (53468129808).

Almost surely, 2^{1344623240665} is an apocalyptic number.

It is an amenable number.

1344623240665 is a deficient number, since it is larger than the sum of its proper divisors (366356913191).

1344623240665 is a wasteful number, since it uses less digits than its factorization.

1344623240665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249.

The product of its (nonzero) digits is 2488320, while the sum is 46.

The spelling of 1344623240665 in words is "one trillion, three hundred forty-four billion, six hundred twenty-three million, two hundred forty thousand, six hundred sixty-five".