13425511444544 has 28 divisors (see below), whose sum is σ = 26641551929388. Its totient is φ = 6712679462400.

The previous prime is 13425511444523. The next prime is 13425511444589. The reversal of 13425511444544 is 44544411552431.

It can be written as a sum of positive squares in 2 ways, for example, as 6118696960000 + 7306814484544 = 2473600^2 + 2703112^2 .

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, 4712834 + ... + 7004414.

Almost surely, 2^{13425511444544} is an apocalyptic number.

It is an amenable number.

13425511444544 is a deficient number, since it is larger than the sum of its proper divisors (13216040484844).

13425511444544 is an equidigital number, since it uses as much as digits as its factorization.

13425511444544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383134 (or 2383124 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 47.

Adding to 13425511444544 its reverse (44544411552431), we get a palindrome (57969922996975).

The spelling of 13425511444544 in words is "thirteen trillion, four hundred twenty-five billion, five hundred eleven million, four hundred forty-four thousand, five hundred forty-four".