54221420205 has 24 divisors (see below), whose sum is σ = 97224617880. Its totient is φ = 27920914560.

The previous prime is 54221420191. The next prime is 54221420207. The reversal of 54221420205 is 50202412245.

54221420205 is a `hidden beast` number, since 5 + 422 + 14 + 20 + 205 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21854891556 + 32366528649 = 147834^2 + 179907^2 .

It is not a de Polignac number, because 54221420205 - 2²³ = 54213031597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54221420207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20773186 + ... + 20775795.

It is an arithmetic number, because the mean of its divisors is an integer number (4051025745).

Almost surely, 2^54221420205 is an apocalyptic number.

It is an amenable number.

54221420205 is a deficient number, since it is larger than the sum of its proper divisors (43003197675).

54221420205 is a wasteful number, since it uses less digits than its factorization.

54221420205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41549021 (or 41549018 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 54221420205 in words is "fifty-four billion, two hundred twenty-one million, four hundred twenty thousand, two hundred five".