500242202990261 has 2 divisors, whose sum is σ = 500242202990262. Its totient is φ = 500242202990260.

The previous prime is 500242202990237. The next prime is 500242202990263. The reversal of 500242202990261 is 162099202242005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473139454629361 + 27102748360900 = 21751769^2 + 5206030^2 .

It is a cyclic number.

It is not a de Polignac number, because 500242202990261 - 2³⁰ = 500241129248437 is a prime.

Together with 500242202990263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500242202990263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250121101495130 + 250121101495131.

It is an arithmetic number, because the mean of its divisors is an integer number (250121101495131).

Almost surely, 2^{500242202990261} is an apocalyptic number.

It is an amenable number.

500242202990261 is a deficient number, since it is larger than the sum of its proper divisors (1).

500242202990261 is an equidigital number, since it uses as much as digits as its factorization.

500242202990261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 500242202990261 in words is "five hundred trillion, two hundred forty-two billion, two hundred two million, nine hundred ninety thousand, two hundred sixty-one".