20555210241 has 8 divisors (see below), whose sum is σ = 30452163360. Its totient is φ = 13703473476.

The previous prime is 20555210209. The next prime is 20555210243. The reversal of 20555210241 is 14201255502.

20555210241 is a `hidden beast` number, since 2 + 0 + 5 + 552 + 102 + 4 + 1 = 666.

It is not a de Polignac number, because 20555210241 - 2⁵ = 20555210209 is a prime.

It is a super-2 number, since 2×20555210241² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 761304083 = 20555210241 / (2 + 0 + 5 + 5 + 5 + 2 + 1 + 0 + 2 + 4 + 1).

It is not an unprimeable number, because it can be changed into a prime (20555210243) 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, 380652015 + ... + 380652068.

It is an arithmetic number, because the mean of its divisors is an integer number (3806520420).

Almost surely, 2^20555210241 is an apocalyptic number.

It is an amenable number.

20555210241 is a deficient number, since it is larger than the sum of its proper divisors (9896953119).

20555210241 is an equidigital number, since it uses as much as digits as its factorization.

20555210241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761304092 (or 761304086 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 20555210241 its reverse (14201255502), we get a palindrome (34756465743).

The spelling of 20555210241 in words is "twenty billion, five hundred fifty-five million, two hundred ten thousand, two hundred forty-one".