520145122112 has 112 divisors (see below), whose sum is σ = 1290307108992. Its totient is φ = 202109921280.

The previous prime is 520145122111. The next prime is 520145122129. The reversal of 520145122112 is 211221541025.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520145122111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1696658 + ... + 1979630.

Almost surely, 2^520145122112 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 520145122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (645153554496).

520145122112 is an abundant number, since it is smaller than the sum of its proper divisors (770161986880).

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

520145122112 is a wasteful number, since it uses less digits than its factorization.

520145122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283376 (or 283366 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 520145122112 its reverse (211221541025), we get a palindrome (731366663137).

The spelling of 520145122112 in words is "five hundred twenty billion, one hundred forty-five million, one hundred twenty-two thousand, one hundred twelve".