1305643224044 has 48 divisors (see below), whose sum is σ = 2396710880256. Its totient is φ = 621652752000.

The previous prime is 1305643224043. The next prime is 1305643224049. The reversal of 1305643224044 is 4404223465031.

It is a junction number, because it is equal to n+sod(n) for n = 1305643223989 and 1305643224007.

It is not an unprimeable number, because it can be changed into a prime (1305643224043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10140269 + ... + 10268219.

It is an arithmetic number, because the mean of its divisors is an integer number (49931476672).

Almost surely, 2^{1305643224044} is an apocalyptic number.

It is an amenable number.

1305643224044 is a deficient number, since it is larger than the sum of its proper divisors (1091067656212).

1305643224044 is a wasteful number, since it uses less digits than its factorization.

1305643224044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129486 (or 129484 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 1305643224044 its reverse (4404223465031), we get a palindrome (5709866689075).

The spelling of 1305643224044 in words is "one trillion, three hundred five billion, six hundred forty-three million, two hundred twenty-four thousand, forty-four".