520321434480 has 160 divisors (see below), whose sum is σ = 1797635301120. Its totient is φ = 138333000960.

The previous prime is 520321434469. The next prime is 520321434481. The reversal of 520321434480 is 84434123025.

520321434480 is a `hidden beast` number, since 5 + 2 + 0 + 32 + 143 + 4 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520321434481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351079 + ... + 1078841.

It is an arithmetic number, because the mean of its divisors is an integer number (11235220632).

Almost surely, 2^520321434480 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 520321434480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898817650560).

520321434480 is an abundant number, since it is smaller than the sum of its proper divisors (1277313866640).

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

520321434480 is a wasteful number, since it uses less digits than its factorization.

520321434480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728116 (or 728104 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 520321434480 in words is "five hundred twenty billion, three hundred twenty-one million, four hundred thirty-four thousand, four hundred eighty".