520720642774116 has 36 divisors (see below), whose sum is σ = 1316896163282700. Its totient is φ = 173490458266368.

The previous prime is 520720642774099. The next prime is 520720642774133. The reversal of 520720642774116 is 611477246027025.

520720642774116 is a `hidden beast` number, since 5 + 2 + 0 + 7 + 206 + 427 + 7 + 4 + 1 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (520720642774099) and next prime (520720642774133).

It can be written as a sum of positive squares in 2 ways, for example, as 423424040652900 + 97296602121216 = 20577270^2 + 9863904^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×520720642774116² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3461978961 + ... + 3462129368.

It is an arithmetic number, because the mean of its divisors is an integer number (36580448980075).

Almost surely, 2^{520720642774116} is an apocalyptic number.

It is an amenable number.

520720642774116 is an abundant number, since it is smaller than the sum of its proper divisors (796175520508584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520720642774116 is a wasteful number, since it uses less digits than its factorization.

520720642774116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924110428 (or 6924110423 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 520720642774116 in words is "five hundred twenty trillion, seven hundred twenty billion, six hundred forty-two million, seven hundred seventy-four thousand, one hundred sixteen".