13421545345243 has 16 divisors (see below), whose sum is σ = 16056722534400. Its totient is φ = 10976275144800.

The previous prime is 13421545345237. The next prime is 13421545345259. The reversal of 13421545345243 is 34254354512431.

It is a happy number.

13421545345243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13421545345243 - 2⁵ = 13421545345211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13421545345193 and 13421545345202.

It is not an unprimeable number, because it can be changed into a prime (13421545345343) 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, 435551068 + ... + 435581881.

It is an arithmetic number, because the mean of its divisors is an integer number (1003545158400).

Almost surely, 2^{13421545345243} is an apocalyptic number.

13421545345243 is a deficient number, since it is larger than the sum of its proper divisors (2635177189157).

13421545345243 is an equidigital number, since it uses as much as digits as its factorization.

13421545345243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871133058.

The product of its digits is 3456000, while the sum is 46.

Adding to 13421545345243 its reverse (34254354512431), we get a palindrome (47675899857674).

The spelling of 13421545345243 in words is "thirteen trillion, four hundred twenty-one billion, five hundred forty-five million, three hundred forty-five thousand, two hundred forty-three".