520065143005 has 4 divisors (see below), whose sum is σ = 624078171612. Its totient is φ = 416052114400.

The previous prime is 520065142973. The next prime is 520065143009. The reversal of 520065143005 is 500341560025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204511068441 + 315554074564 = 452229^2 + 561742^2 .

It is not a de Polignac number, because 520065143005 - 2⁵ = 520065142973 is a prime.

It is a super-2 number, since 2×520065143005² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520065143009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52006514296 + ... + 52006514305.

It is an arithmetic number, because the mean of its divisors is an integer number (156019542903).

Almost surely, 2^520065143005 is an apocalyptic number.

It is an amenable number.

520065143005 is a deficient number, since it is larger than the sum of its proper divisors (104013028607).

520065143005 is a wasteful number, since it uses less digits than its factorization.

520065143005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104013028606.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 520065143005 in words is "five hundred twenty billion, sixty-five million, one hundred forty-three thousand, five".