13405500020502 has 48 divisors (see below), whose sum is σ = 30574405105920. Its totient is φ = 4233252423600.

The previous prime is 13405500020501. The next prime is 13405500020557. The reversal of 13405500020502 is 20502000550431.

It is a happy number.

13405500020502 is a `hidden beast` number, since 1 + 3 + 40 + 550 + 0 + 0 + 20 + 50 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13405500020501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26034927 + ... + 26544837.

It is an arithmetic number, because the mean of its divisors is an integer number (636966773040).

Almost surely, 2^{13405500020502} is an apocalyptic number.

13405500020502 is an abundant number, since it is smaller than the sum of its proper divisors (17168905085418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13405500020502 is a wasteful number, since it uses less digits than its factorization.

13405500020502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586809 (or 586806 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 13405500020502 its reverse (20502000550431), we get a palindrome (33907500570933).

The spelling of 13405500020502 in words is "thirteen trillion, four hundred five billion, five hundred million, twenty thousand, five hundred two".