8481257660 has 24 divisors (see below), whose sum is σ = 18292011360. Its totient is φ = 3300813504.

The previous prime is 8481257657. The next prime is 8481257689. The reversal of 8481257660 is 667521848.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5729840 + ... + 5731319.

It is an arithmetic number, because the mean of its divisors is an integer number (762167140).

Almost surely, 2^8481257660 is an apocalyptic number.

It is an amenable number.

8481257660 is an abundant number, since it is smaller than the sum of its proper divisors (9810753700).

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

8481257660 is a wasteful number, since it uses less digits than its factorization.

8481257660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11461205 (or 11461203 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 8481257660 is about 92093.7438700371. The cubic root of 8481257660 is about 2039.3264516741.

The spelling of 8481257660 in words is "eight billion, four hundred eighty-one million, two hundred fifty-seven thousand, six hundred sixty".