520706055555 has 48 divisors (see below), whose sum is σ = 1076834305440. Its totient is φ = 238037050944.

The previous prime is 520706055553. The next prime is 520706055557. The reversal of 520706055555 is 555550607025.

It is a happy number.

520706055555 is a `hidden beast` number, since 5 + 20 + 70 + 6 + 0 + 5 + 5 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (520706055553) and next prime (520706055557).

It is not a de Polignac number, because 520706055555 - 2¹ = 520706055553 is a prime.

It is a super-2 number, since 2×520706055555² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 520706055555.

It is not an unprimeable number, because it can be changed into a prime (520706055553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39351364 + ... + 39364593.

It is an arithmetic number, because the mean of its divisors is an integer number (22434048030).

Almost surely, 2^520706055555 is an apocalyptic number.

520706055555 is an abundant number, since it is smaller than the sum of its proper divisors (556128249885).

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

520706055555 is a wasteful number, since it uses less digits than its factorization.

520706055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78715985 (or 78715972 counting only the distinct ones).

The product of its (nonzero) digits is 1312500, while the sum is 45.

The spelling of 520706055555 in words is "five hundred twenty billion, seven hundred six million, fifty-five thousand, five hundred fifty-five".