520950351009 has 16 divisors (see below), whose sum is σ = 761084064000. Its totient is φ = 314336610960.

The previous prime is 520950350993. The next prime is 520950351041. The reversal of 520950351009 is 900153059025.

It is not a de Polignac number, because 520950351009 - 2⁴ = 520950350993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520950351079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34764259 + ... + 34779240.

It is an arithmetic number, because the mean of its divisors is an integer number (47567754000).

Almost surely, 2^520950351009 is an apocalyptic number.

It is an amenable number.

520950351009 is a deficient number, since it is larger than the sum of its proper divisors (240133712991).

520950351009 is a wasteful number, since it uses less digits than its factorization.

520950351009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69543740.

The product of its (nonzero) digits is 60750, while the sum is 39.

The spelling of 520950351009 in words is "five hundred twenty billion, nine hundred fifty million, three hundred fifty-one thousand, nine".