520217338538 has 16 divisors (see below), whose sum is σ = 829519294464. Its totient is φ = 243832824000.

The previous prime is 520217338483. The next prime is 520217338541. The reversal of 520217338538 is 835833712025.

It is a happy number.

It is a super-3 number, since 3×520217338538³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520217338492 and 520217338501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30470570 + ... + 30487637.

It is an arithmetic number, because the mean of its divisors is an integer number (51844955904).

Almost surely, 2^520217338538 is an apocalyptic number.

520217338538 is a deficient number, since it is larger than the sum of its proper divisors (309301955926).

520217338538 is a wasteful number, since it uses less digits than its factorization.

520217338538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60958477.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 520217338538 in words is "five hundred twenty billion, two hundred seventeen million, three hundred thirty-eight thousand, five hundred thirty-eight".