6521345148 has 48 divisors (see below), whose sum is σ = 16061911040. Its totient is φ = 2059346160.

The previous prime is 6521345141. The next prime is 6521345161. The reversal of 6521345148 is 8415431256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521345141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42693 + ... + 121923.

Almost surely, 2^6521345148 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 6521345148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8030955520).

6521345148 is an abundant number, since it is smaller than the sum of its proper divisors (9540565892).

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

6521345148 is a wasteful number, since it uses less digits than its factorization.

6521345148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79295 (or 79255 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 6521345148 is about 80754.8459722387. The cubic root of 6521345148 is about 1868.2961925650.

The spelling of 6521345148 in words is "six billion, five hundred twenty-one million, three hundred forty-five thousand, one hundred forty-eight".