13405502123203 has 2 divisors, whose sum is σ = 13405502123204. Its totient is φ = 13405502123202.

The previous prime is 13405502123171. The next prime is 13405502123333. The reversal of 13405502123203 is 30232120550431.

It is a weak prime.

It is an emirp because it is prime and its reverse (30232120550431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13405502123203 - 2⁵ = 13405502123171 is a prime.

It is not a weakly prime, because it can be changed into another prime (13405502121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702751061601 + 6702751061602.

It is an arithmetic number, because the mean of its divisors is an integer number (6702751061602).

Almost surely, 2^{13405502123203} is an apocalyptic number.

13405502123203 is a deficient number, since it is larger than the sum of its proper divisors (1).

13405502123203 is an equidigital number, since it uses as much as digits as its factorization.

13405502123203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 13405502123203 its reverse (30232120550431), we get a palindrome (43637622673634).

The spelling of 13405502123203 in words is "thirteen trillion, four hundred five billion, five hundred two million, one hundred twenty-three thousand, two hundred three".