13124420521503 has 16 divisors (see below), whose sum is σ = 18542556541440. Its totient is φ = 8228724806016.

The previous prime is 13124420521463. The next prime is 13124420521507. The reversal of 13124420521503 is 30512502442131.

It is not a de Polignac number, because 13124420521503 - 2²⁵ = 13124386967071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124420521507) 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, 96895993 + ... + 97031346.

It is an arithmetic number, because the mean of its divisors is an integer number (1158909783840).

Almost surely, 2^{13124420521503} is an apocalyptic number.

13124420521503 is a deficient number, since it is larger than the sum of its proper divisors (5418136019937).

13124420521503 is a wasteful number, since it uses less digits than its factorization.

13124420521503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193928686.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 13124420521503 its reverse (30512502442131), we get a palindrome (43636922963634).

The spelling of 13124420521503 in words is "thirteen trillion, one hundred twenty-four billion, four hundred twenty million, five hundred twenty-one thousand, five hundred three".