1344644650445 has 4 divisors (see below), whose sum is σ = 1613573580540. Its totient is φ = 1075715720352.

The previous prime is 1344644650403. The next prime is 1344644650513. The reversal of 1344644650445 is 5440564464431.

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 157178945764 + 1187465704681 = 396458^2 + 1089709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344644650445 - 2⁸ = 1344644650189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1344644650393 and 1344644650402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134464465040 + ... + 134464465049.

It is an arithmetic number, because the mean of its divisors is an integer number (403393395135).

Almost surely, 2^{1344644650445} is an apocalyptic number.

It is an amenable number.

1344644650445 is a deficient number, since it is larger than the sum of its proper divisors (268928930095).

1344644650445 is an equidigital number, since it uses as much as digits as its factorization.

1344644650445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268928930094.

The product of its (nonzero) digits is 11059200, while the sum is 50.

The spelling of 1344644650445 in words is "one trillion, three hundred forty-four billion, six hundred forty-four million, six hundred fifty thousand, four hundred forty-five".