20565550241 has 8 divisors (see below), whose sum is σ = 20640940320. Its totient is φ = 20490215328.

The previous prime is 20565550193. The next prime is 20565550289. The reversal of 20565550241 is 14205556502.

It is an interprime number because it is at equal distance from previous prime (20565550193) and next prime (20565550289).

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 20565550241 - 2¹⁸ = 20565288097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20565540241) 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, 825530 + ... + 850076.

It is an arithmetic number, because the mean of its divisors is an integer number (2580117540).

Almost surely, 2^20565550241 is an apocalyptic number.

It is an amenable number.

20565550241 is a deficient number, since it is larger than the sum of its proper divisors (75390079).

20565550241 is a wasteful number, since it uses less digits than its factorization.

20565550241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27583.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 20565550241 in words is "twenty billion, five hundred sixty-five million, five hundred fifty thousand, two hundred forty-one".