520443540431040 has 224 divisors, whose sum is σ = 1656824165867520. Its totient is φ = 138414097391616.

The previous prime is 520443540431029. The next prime is 520443540431137. The reversal of 520443540431040 is 40134045344025.

It is a super-2 number, since 2×520443540431040² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520443540431040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8010611676 + ... + 8010676644.

Almost surely, 2^{520443540431040} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520443540431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (828412082933760).

520443540431040 is an abundant number, since it is smaller than the sum of its proper divisors (1136380625436480).

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

520443540431040 is a wasteful number, since it uses less digits than its factorization.

520443540431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87159 (or 87149 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 520443540431040 its reverse (40134045344025), we get a palindrome (560577585775065).

The spelling of 520443540431040 in words is "five hundred twenty trillion, four hundred forty-three billion, five hundred forty million, four hundred thirty-one thousand, forty".