20054408213 has 6 divisors (see below), whose sum is σ = 23328597366. Its totient is φ = 17189492712.

The previous prime is 20054408203. The next prime is 20054408267. The reversal of 20054408213 is 31280445002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11248087249 + 8806320964 = 106057^2 + 93842^2 .

It is not a de Polignac number, because 20054408213 - 2⁶ = 20054408149 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 (20054408203) 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 in 5 ways as a sum of consecutive naturals, for example, 204636770 + ... + 204636867.

It is an arithmetic number, because the mean of its divisors is an integer number (3888099561).

Almost surely, 2^20054408213 is an apocalyptic number.

It is an amenable number.

20054408213 is a deficient number, since it is larger than the sum of its proper divisors (3274189153).

20054408213 is an equidigital number, since it uses as much as digits as its factorization.

20054408213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409273651 (or 409273644 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 20054408213 in words is "twenty billion, fifty-four million, four hundred eight thousand, two hundred thirteen".