13405502123202 has 128 divisors (see below), whose sum is σ = 31061830625280. Its totient is φ = 3777956536320.

The previous prime is 13405502123171. The next prime is 13405502123203. The reversal of 13405502123202 is 20232120550431.

It is a self number, because there is not a number n which added to its sum of digits gives 13405502123202.

It is not an unprimeable number, because it can be changed into a prime (13405502123203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1218344233 + ... + 1218355235.

It is an arithmetic number, because the mean of its divisors is an integer number (242670551760).

Almost surely, 2^{13405502123202} is an apocalyptic number.

13405502123202 is an abundant number, since it is smaller than the sum of its proper divisors (17656328502078).

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

13405502123202 is a wasteful number, since it uses less digits than its factorization.

13405502123202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12488.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 13405502123202 its reverse (20232120550431), we get a palindrome (33637622673633).

The spelling of 13405502123202 in words is "thirteen trillion, four hundred five billion, five hundred two million, one hundred twenty-three thousand, two hundred two".