20145045224213 has 32 divisors (see below), whose sum is σ = 25604122091520. Its totient is φ = 15418499532480.

The previous prime is 20145045224207. The next prime is 20145045224251. The reversal of 20145045224213 is 31242254054102.

It is a cyclic number.

It is not a de Polignac number, because 20145045224213 - 2²⁰ = 20145044175637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145045244213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5484806 + ... + 8388872.

It is an arithmetic number, because the mean of its divisors is an integer number (800128815360).

Almost surely, 2^{20145045224213} is an apocalyptic number.

It is an amenable number.

20145045224213 is a deficient number, since it is larger than the sum of its proper divisors (5459076867307).

20145045224213 is a wasteful number, since it uses less digits than its factorization.

20145045224213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906577.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 20145045224213 its reverse (31242254054102), we get a palindrome (51387299278315).

The spelling of 20145045224213 in words is "twenty trillion, one hundred forty-five billion, forty-five million, two hundred twenty-four thousand, two hundred thirteen".