520000000000000 has 448 divisors, whose sum is σ = 1399978637465940. Its totient is φ = 192000000000000.

The previous prime is 519999999999971. The next prime is 520000000000073. The reversal of 520000000000000 is 25.

It can be written as a sum of positive squares in 14 ways, for example, as 420327411564544 + 99672588435456 = 20501888^2 + 9983616^2 .

It is a sliding number, since 520000000000000 = 20000000000000 + 500000000000000 and 1/20000000000000 + 1/500000000000000 = 0.0000000000000520000000000000.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 39999999999994 + ... + 40000000000006.

Almost surely, 2^{520000000000000} is an apocalyptic number.

520000000000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520000000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699989318732970).

520000000000000 is an abundant number, since it is smaller than the sum of its proper divisors (879978637465940).

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

520000000000000 is an frugal number, since it uses more digits than its factorization.

520000000000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 7.

Adding to 520000000000000 its reverse (25), we get a palindrome (520000000000025).

It can be divided in two parts, 5 and 20000000000000, that multiplied together give a 14-th power (100000000000000 = 10¹⁴).

The spelling of 520000000000000 in words is "five hundred twenty trillion", and thus it is an aban number.