13123303503344 has 20 divisors (see below), whose sum is σ = 25426458342096. Its totient is φ = 6561636834432.

The previous prime is 13123303503341. The next prime is 13123303503367. The reversal of 13123303503344 is 44330530332131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123303503341) 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, 10797572 + ... + 11951324.

Almost surely, 2^{13123303503344} is an apocalyptic number.

It is an amenable number.

13123303503344 is a deficient number, since it is larger than the sum of its proper divisors (12303154838752).

13123303503344 is a wasteful number, since it uses less digits than its factorization.

13123303503344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864664 (or 1864658 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 35.

Adding to 13123303503344 its reverse (44330530332131), we get a palindrome (57453833835475).

The spelling of 13123303503344 in words is "thirteen trillion, one hundred twenty-three billion, three hundred three million, five hundred three thousand, three hundred forty-four".