520202836381 has 2 divisors, whose sum is σ = 520202836382. Its totient is φ = 520202836380.

The previous prime is 520202836379. The next prime is 520202836397. The reversal of 520202836381 is 183638202025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371013773881 + 149189062500 = 609109^2 + 386250^2 .

It is a cyclic number.

It is not a de Polignac number, because 520202836381 - 2¹ = 520202836379 is a prime.

It is a super-3 number, since 3×520202836381³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 520202836379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520202836481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260101418190 + 260101418191.

It is an arithmetic number, because the mean of its divisors is an integer number (260101418191).

Almost surely, 2^520202836381 is an apocalyptic number.

It is an amenable number.

520202836381 is a deficient number, since it is larger than the sum of its proper divisors (1).

520202836381 is an equidigital number, since it uses as much as digits as its factorization.

520202836381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 520202836381 in words is "five hundred twenty billion, two hundred two million, eight hundred thirty-six thousand, three hundred eighty-one".