6520163220480 has 1056 divisors, whose sum is σ = 26232276833280. Its totient is φ = 1370049085440.

The previous prime is 6520163220479. The next prime is 6520163220481. The reversal of 6520163220480 is 840223610256.

It is an interprime number because it is at equal distance from previous prime (6520163220479) and next prime (6520163220481).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520163220481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2651549491 + ... + 2651551949.

Almost surely, 2^{6520163220480} is an apocalyptic number.

6520163220480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6520163220480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13116138416640).

6520163220480 is an abundant number, since it is smaller than the sum of its proper divisors (19712113612800).

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

6520163220480 is a wasteful number, since it uses less digits than its factorization.

6520163220480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 6520163220480 in words is "six trillion, five hundred twenty billion, one hundred sixty-three million, two hundred twenty thousand, four hundred eighty".