20045401213 has 8 divisors (see below), whose sum is σ = 20189796536. Its totient is φ = 19901376000.

The previous prime is 20045401177. The next prime is 20045401241. The reversal of 20045401213 is 31210454002.

It can be written as a sum of positive squares in 4 ways, for example, as 5577401124 + 14468000089 = 74682^2 + 120283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20045401213 - 2⁹ = 20045400701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045401273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16645 + ... + 200917.

It is an arithmetic number, because the mean of its divisors is an integer number (2523724567).

Almost surely, 2^20045401213 is an apocalyptic number.

It is an amenable number.

20045401213 is a deficient number, since it is larger than the sum of its proper divisors (144395323).

20045401213 is a wasteful number, since it uses less digits than its factorization.

20045401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185055.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20045401213 its reverse (31210454002), we get a palindrome (51255855215).

The spelling of 20045401213 in words is "twenty billion, forty-five million, four hundred one thousand, two hundred thirteen".