865448250480 has 1200 divisors, whose sum is σ = 3504770100000. Its totient is φ = 190621347840.

The previous prime is 865448250479. The next prime is 865448250481. The reversal of 865448250480 is 84052844568.

865448250480 is a `hidden beast` number, since 8 + 6 + 54 + 4 + 8 + 2 + 504 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (865448250479) and next prime (865448250481).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865448250481) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 5808377446 + ... + 5808377594.

It is an arithmetic number, because the mean of its divisors is an integer number (2920641750).

Almost surely, 2^865448250480 is an apocalyptic number.

865448250480 is a gapful number since it is divisible by the number (80) 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 865448250480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752385050000).

865448250480 is an abundant number, since it is smaller than the sum of its proper divisors (2639321849520).

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

865448250480 is a wasteful number, since it uses less digits than its factorization.

865448250480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 54.

The spelling of 865448250480 in words is "eight hundred sixty-five billion, four hundred forty-eight million, two hundred fifty thousand, four hundred eighty".