6481546500 has 576 divisors, whose sum is σ = 23228464896. Its totient is φ = 1393920000.

The previous prime is 6481546493. The next prime is 6481546517. The reversal of 6481546500 is 56451846.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 96739467 + ... + 96739533.

It is an arithmetic number, because the mean of its divisors is an integer number (40327196).

Almost surely, 2^6481546500 is an apocalyptic number.

6481546500 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 6481546500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11614232448).

6481546500 is an abundant number, since it is smaller than the sum of its proper divisors (16746918396).

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

6481546500 is a wasteful number, since it uses less digits than its factorization.

6481546500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 142 counting only the distinct ones).

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

The square root of 6481546500 is about 80508.0523922918. The cubic root of 6481546500 is about 1864.4878045860.

The spelling of 6481546500 in words is "six billion, four hundred eighty-one million, five hundred forty-six thousand, five hundred".