520361423261 has 8 divisors (see below), whose sum is σ = 549859073280. Its totient is φ = 491436543312.

The previous prime is 520361423249. The next prime is 520361423273. The reversal of 520361423261 is 162324163025.

It is an interprime number because it is at equal distance from previous prime (520361423249) and next prime (520361423273).

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 520361423261 - 2¹⁰ = 520361422237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520361420261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143190650 + ... + 143194283.

It is an arithmetic number, because the mean of its divisors is an integer number (68732384160).

Almost surely, 2^520361423261 is an apocalyptic number.

It is an amenable number.

520361423261 is a deficient number, since it is larger than the sum of its proper divisors (29497650019).

520361423261 is a wasteful number, since it uses less digits than its factorization.

520361423261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286385035.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 520361423261 its reverse (162324163025), we get a palindrome (682685586286).

The spelling of 520361423261 in words is "five hundred twenty billion, three hundred sixty-one million, four hundred twenty-three thousand, two hundred sixty-one".