520053403440 has 160 divisors (see below), whose sum is σ = 1751759308800. Its totient is φ = 127143751680.

The previous prime is 520053403399. The next prime is 520053403453. The reversal of 520053403440 is 44304350025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 520053403398 and 520053403407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1698105 + ... + 1980824.

It is an arithmetic number, because the mean of its divisors is an integer number (10948495680).

Almost surely, 2^520053403440 is an apocalyptic number.

It is an amenable number.

520053403440 is an abundant number, since it is smaller than the sum of its proper divisors (1231705905360).

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

520053403440 is a wasteful number, since it uses less digits than its factorization.

520053403440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678995 (or 3678989 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 520053403440 its reverse (44304350025), we get a palindrome (564357753465).

The spelling of 520053403440 in words is "five hundred twenty billion, fifty-three million, four hundred three thousand, four hundred forty".