6520285907484 has 96 divisors (see below), whose sum is σ = 16485515456256. Its totient is φ = 1997772241920.

The previous prime is 6520285907461. The next prime is 6520285907491. The reversal of 6520285907484 is 4847095820256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83215894 + ... + 83294210.

It is an arithmetic number, because the mean of its divisors is an integer number (171724119336).

Almost surely, 2^{6520285907484} 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 6520285907484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8242757728128).

6520285907484 is an abundant number, since it is smaller than the sum of its proper divisors (9965229548772).

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

6520285907484 is a wasteful number, since it uses less digits than its factorization.

6520285907484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87875 (or 87873 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 60.

The spelling of 6520285907484 in words is "six trillion, five hundred twenty billion, two hundred eighty-five million, nine hundred seven thousand, four hundred eighty-four".