6481328526 has 48 divisors (see below), whose sum is σ = 14841066240. Its totient is φ = 2038554000.

The previous prime is 6481328473. The next prime is 6481328527. The reversal of 6481328526 is 6258231846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481328527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48091 + ... + 123593.

It is an arithmetic number, because the mean of its divisors is an integer number (309188880).

Almost surely, 2^6481328526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6481328526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7420533120).

6481328526 is an abundant number, since it is smaller than the sum of its proper divisors (8359737714).

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

6481328526 is a wasteful number, since it uses less digits than its factorization.

6481328526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75781 (or 75778 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 6481328526 is about 80506.6986405479. The cubic root of 6481328526 is about 1864.4669034827.

It can be divided in two parts, 64813 and 28526, that added together give a palindrome (93339).

The spelling of 6481328526 in words is "six billion, four hundred eighty-one million, three hundred twenty-eight thousand, five hundred twenty-six".