6521875480 has 128 divisors (see below), whose sum is σ = 15519398400. Its totient is φ = 2463436800.

The previous prime is 6521875447. The next prime is 6521875531. The reversal of 6521875480 is 845781256.

It is a self number, because there is not a number n which added to its sum of digits gives 6521875480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9866350 + ... + 9867010.

It is an arithmetic number, because the mean of its divisors is an integer number (121245300).

Almost surely, 2^6521875480 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 6521875480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7759699200).

6521875480 is an abundant number, since it is smaller than the sum of its proper divisors (8997522920).

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

6521875480 is a wasteful number, since it uses less digits than its factorization.

6521875480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 6521875480 is about 80758.1294979026. The cubic root of 6521875480 is about 1868.3468360226.

The spelling of 6521875480 in words is "six billion, five hundred twenty-one million, eight hundred seventy-five thousand, four hundred eighty".