520155346404471 has 8 divisors (see below), whose sum is σ = 693575329000704. Its totient is φ = 346752797372280.

The previous prime is 520155346404383. The next prime is 520155346404497. The reversal of 520155346404471 is 174404643551025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520155346404471 - 2¹⁰ = 520155346403447 is a prime.

It is a super-3 number, since 3×520155346404471³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520155346404271) 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, 4358321391 + ... + 4358440736.

It is an arithmetic number, because the mean of its divisors is an integer number (86696916125088).

Almost surely, 2^{520155346404471} is an apocalyptic number.

520155346404471 is a deficient number, since it is larger than the sum of its proper divisors (173419982596233).

520155346404471 is a wasteful number, since it uses less digits than its factorization.

520155346404471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8716782021.

The product of its (nonzero) digits is 8064000, while the sum is 51.

Adding to 520155346404471 its reverse (174404643551025), we get a palindrome (694559989955496).

The spelling of 520155346404471 in words is "five hundred twenty trillion, one hundred fifty-five billion, three hundred forty-six million, four hundred four thousand, four hundred seventy-one".