20404510241 has 4 divisors (see below), whose sum is σ = 20415068052. Its totient is φ = 20393952432.

The previous prime is 20404510211. The next prime is 20404510271. The reversal of 20404510241 is 14201540402.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20404510211) and next prime (20404510271).

It can be written as a sum of positive squares in 2 ways, for example, as 10970467600 + 9434042641 = 104740^2 + 97129^2 .

It is a cyclic number.

It is not a de Polignac number, because 20404510241 - 2⁶ = 20404510177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404510211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5276006 + ... + 5279871.

It is an arithmetic number, because the mean of its divisors is an integer number (5103767013).

Almost surely, 2^20404510241 is an apocalyptic number.

It is an amenable number.

20404510241 is a deficient number, since it is larger than the sum of its proper divisors (10557811).

20404510241 is a wasteful number, since it uses less digits than its factorization.

20404510241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557810.

The product of its (nonzero) digits is 1280, while the sum is 23.

The spelling of 20404510241 in words is "twenty billion, four hundred four million, five hundred ten thousand, two hundred forty-one".