520991172341 has 2 divisors, whose sum is σ = 520991172342. Its totient is φ = 520991172340.

The previous prime is 520991172311. The next prime is 520991172347. The reversal of 520991172341 is 143271199025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507414028900 + 13577143441 = 712330^2 + 116521^2 .

It is a cyclic number.

It is not a de Polignac number, because 520991172341 - 2¹⁰ = 520991171317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520991172292 and 520991172301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520991172347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260495586170 + 260495586171.

It is an arithmetic number, because the mean of its divisors is an integer number (260495586171).

Almost surely, 2^520991172341 is an apocalyptic number.

It is an amenable number.

520991172341 is a deficient number, since it is larger than the sum of its proper divisors (1).

520991172341 is an equidigital number, since it uses as much as digits as its factorization.

520991172341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 520991172341 in words is "five hundred twenty billion, nine hundred ninety-one million, one hundred seventy-two thousand, three hundred forty-one".